{"title":"Boiler Aquastats","description":"\u003cp\u003e\u003cstrong\u003eShop boiler aquastats and hydronic temperature controls.\u003c\/strong\u003e Match aquastats by control model, immersion well size, temperature range, voltage, relay functions, and boiler application.\u003c\/p\u003e\u003cp\u003eUse the \u003ca href=\"\/pages\/parts-finder\"\u003eAI HVAC Parts Finder\u003c\/a\u003e to upload photos of the aquastat label, wiring, well, and boiler rating plate.\u003c\/p\u003e\u003cp\u003eHelpful guide: \u003ca href=\"\/pages\/boiler-aquastat-replacement-guide\"\u003eboiler aquastat replacement guide\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"quiet-one-s10028-fan-convector-unit-clip-on-aquastat","title":"Quiet-One S10028 Fan Convector Unit Clip-On Aquastat","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eQuiet-One S10028 Fan Convector Unit Clip-On Aquastat\u003c\/b\u003e delivers precise temperature control for PSU-series convectors. Designed for use on PSU10\/PSU15\/PSU23\/PSU30\/PSU40 Profile Fan Convector Units, it maintains a target water temperature in the 110–130°F range, helping reduce cycling and stabilize overall performance.\u003c\/p\u003e \u003cp\u003eWith a clip-on design that simplifies installation, this aquastat snaps onto the convector without invasive wiring or tools. It integrates with existing control loops to provide reliable, consistent temperature management, supporting efficient operation in commercial and residential HVAC applications.\u003c\/p\u003e \u003cp\u003eIn short, it serves as a straightforward replacement or upgrade part for Quiet-One systems, ensuring compatibility and dependable control across multiple PSU profiles.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCompatible with PSU10, PSU15, PSU23, PSU30, and PSU40 Quiet-One Profile Fan Convector Units\u003c\/li\u003e \u003cli\u003eTemperature range: 110°F to 130°F\u003c\/li\u003e \u003cli\u003eClip-on installation for fast, non-invasive service\u003c\/li\u003e \u003cli\u003eMaintains stable temperature control to improve comfort\u003c\/li\u003e \u003cli\u003eReliable replacement or upgrade part for Quiet-One S10028 systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601984930014,"sku":"56714","price":19.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00354284_e7aa12dd-e7c7-48d9-a89e-7b9caeb9ae7d.jpg?v=1765822502"},{"product_id":"amtrol-2704-392-water-heater-aquastat-retrofit-kit","title":"Amtrol 2704-392 Water Heater Aquastat Retrofit Kit","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eWater Heater Aquastat Retrofit Kit\u003c\/b\u003e from Amtrol offers reliable control for indirect fired water heaters. This Amtrol 2704-392 Water Heater Aquastat Retrofit Kit is designed to retrofit your existing system and restore precise temperature management.\u003c\/p\u003e \u003cp\u003eThis retrofit kit fits \u003ci\u003eindirect fired water heaters\u003c\/i\u003e and is compatible with WH-7L and Hot Water Makers brands.\u003c\/p\u003e \u003cp\u003eIdeal replacement for aging aquastats, it offers simple installation, durable construction, and dependable temperature control to optimize hot water comfort and energy use.\u003c\/p\u003e \u003cp\u003eEngineered for compatibility with indirect-fired systems, the Amtrol 2704-392 ensures reliable operation across seasons.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eModel compatibility: WH-7L and Hot Water Makers indirect fired water heaters\u003c\/li\u003e \u003cli\u003eEasy retrofit design for quick installation\u003c\/li\u003e \u003cli\u003eDurable components built for long-term reliability\u003c\/li\u003e \u003cli\u003ePrecise temperature control to improve comfort and efficiency\u003c\/li\u003e \u003cli\u003eReliable performance across varying water demand\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you're upgrading an aging system or replacing a failed aquastat, this kit provides a secure wiring harness, compatible controls, and factory-tested performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47604946141406,"sku":"109784","price":351.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00379545_e76f4124-19cc-4f99-8032-17e98cb1cc93.jpg?v=1765819887"},{"product_id":"amtrol-2704-093-water-heater-mechanical-aquastat-temperature-control","title":"Amtrol 2704-093 Water Heater Mechanical Aquastat Temperature Control","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eWater Heater Mechanical Aquastat Temperature Control\u003c\/b\u003e from Amtrol delivers reliable temperature regulation for indirect fired water heaters. The Amtrol 2704-093 mechanical aquastat control is designed to monitor and regulate temperature with a straightforward mechanical design.\u003c\/p\u003e \u003cp\u003eIt is used on models WH-10, HM-41, HM-80, HYDROMAX, and Hot Water Makers, showing broad compatibility across common indirect fired water heating configurations. This compatibility enhances maintenance and inventory management for technicians, making parts selection easier across multiple brands.\u003c\/p\u003e \u003cp\u003eDesigned for service in indirect fired configurations, this control supports dependable temperature management across compatible installations. This part is a valuable asset for keeping hot water systems ready for service.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eWH-10 compatibility for WH-10 indirect-fired installations\u003c\/li\u003e\n\u003cli\u003eHM-41 compatibility across HM-41 equipment\u003c\/li\u003e\n\u003cli\u003eHM-80 compatibility for HM-80 configurations\u003c\/li\u003e\n\u003cli\u003eHYDROMAX compatibility with HYDROMAX models\u003c\/li\u003e\n\u003cli\u003eHot Water Makers compatibility for Hot Water Makers setups\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis Amtrol component is the 2704-093 mechanical aquastat temperature control designed for use with indirect fired water heaters and the listed brands.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47604946338014,"sku":"50941","price":175.26,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00379561_294c4bdd-7dc7-4307-bc7f-6ef797bc7694.jpg?v=1765809254"},{"product_id":"argo-550002858","title":"Argo 550002858 Electronic Aquastat","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eArgo 550002858\u003c\/b\u003e is a SPST electronic aquastat that precisely regulates boiler temperature in the 130–240°F range. This rugged replacement boiler part is designed to replace L7148F1042 and 14662025, ensuring compatibility with existing heating systems and minimizing downtime.\u003c\/p\u003e \u003cp\u003eEngineered for reliable boiler temperature control, this SPST electronic aquastat delivers steady, fail-safe operation in residential or light commercial heating setups. It provides accurate cut-in and cut-out within the 130°F–240°F window, protecting equipment, conserving energy, and improving overall system performance. Use this replacement part to simplify maintenance, extend the life of your heating system, and keep temperatures steady without manual adjustments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e 130°F–240°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e SPST electronic aquastat\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eReplaces:\u003c\/b\u003e L7148F1042 and 14662025\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Argo heating systems and standard boiler setups\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBenefits:\u003c\/b\u003e precise control, energy efficiency, quick installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47604978221278,"sku":"292302","price":478.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00379574_d2381bc2-8bf1-4587-a43b-d954ca47f59b.jpg?v=1765815545"},{"product_id":"burnham-80160251-gas-fired-boiler-high-limit-aquastat-control","title":"Burnham 80160251 Gas Fired Boiler High Limit Aquastat Control","description":"\u003cdiv\u003e\n\u003cp\u003eGas Fired Boiler High Limit Aquastat Control from Burnham 80160251 is a reliable safety device that protects your heating system by precisely regulating boiler temperature. This High Limit aquastat control is designed for use on Gas Fired Boiler assemblies and is intended for models 8H\/8HE. With a temperature rating of 140 to 220°F, it provides dependable protection against overheating while letting the system run efficiently. Engineered for durability and easy replacement, this aquastat supports consistent operation and boiler safety across seasons.\u003c\/p\u003e \u003cp\u003eKey compatibility and benefits include seamless integration with standard safety controls and dependable performance as a critical boiler safety component. Use on Gas Fired Boiler systems, specifically the 8H\/8HE model family, to maintain safe operating temperatures and extend equipment life.\u003c\/p\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eGas Fired Boiler High Limit Aquastat Control\u003c\/b\u003e for Burnham 80160251\u003c\/li\u003e\n\u003cli\u003eType: \u003cb\u003eHigh Limit\u003c\/b\u003e Aquastat Control\u003c\/li\u003e\n\u003cli\u003eUsed On: \u003cb\u003eGas Fired Boiler\u003c\/b\u003e; Model\/Brand: \u003cb\u003e8H\/8HE\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003eTemperature Range: \u003cb\u003e140–220°F\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable, easy replacement and \u003cb\u003eaquastat control\u003c\/b\u003e that integrates with standard wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605065351390,"sku":"270960","price":121.06,"currency_code":"USD","in_stock":true}]},{"product_id":"honeywell-commercial-4074eus-aquastat-relay-bag-assembly","title":"Honeywell Commercial 4074EUS Aquastat Relay Bag Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eHoneywell Commercial 4074EUS Aquastat Relay Bag Assembly\u003c\/b\u003e is a durable, ready-to-install replacement part engineered for reliable boiler control in commercial settings. This \u003cb\u003ebag assembly\u003c\/b\u003e is designed for use with the \u003cb\u003eL8148\u003c\/b\u003e and \u003cb\u003eL8124\u003c\/b\u003e Aquastat Relay units, ensuring seamless compatibility with existing systems.\u003c\/p\u003e \u003cp\u003eKey features and functions include flexible \u003cb\u003e1\/4 inch quick connect\u003c\/b\u003e to screw-terminal connections, rugged construction for high-demand environments, and straightforward installation that minimizes downtime on \u003cb\u003ecommercial boiler controls\u003c\/b\u003e.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Works with L8148 and L8124 Aquastat Relay assemblies\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTerminals:\u003c\/b\u003e \u003ci\u003e1\/4 inch quick connect\u003c\/i\u003e to screw terminals for versatile wiring\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Bag Assembly designed for reliable relay operation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurability:\u003c\/b\u003e Built for commercial use with long service life\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEasy replacement:\u003c\/b\u003e Simple swap to reduce downtime and maintain control of the heating system\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade or replace with the Honeywell 4074EUS bag assembly to maintain precise, dependable control in your heating system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605267955934,"sku":"32868","price":4.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00357589_debb74b0-6e20-409a-9d65-c902fb2b8be4.jpg?v=1765820853"},{"product_id":"honeywell-commercial-121371e-aquastat-sensor-well-assembly","title":"Honeywell Commercial 121371E Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eAquastat Sensor Well Assembly\u003c\/b\u003e — Honeywell Commercial 121371E delivers robust immersion-type sensing for commercial HVAC systems. This capillary sensor well combines precise temperature sensing with dependable stainless steel construction, engineered to withstand demanding industrial environments.\u003c\/p\u003e \u003cp\u003eDesigned for reliability, it features an immersion-style bulb with a capillary and a sturdy stainless steel body. Key specs include a bulb size of 3\/8 inch diameter by 3 inch length, a 1\/2 inch threaded connection for secure mounting, and an insulation depth of 1-1\/2 inches to minimize heat loss. The capillary diameter is 5\/64 inch, and the unit carries a pressure rating of 255 PSI at 300°F, making it suitable for boiler and hydronic systems. The package includes the 121371 mounting clamp for quick, trouble-free installation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eImmersion-type sensor well with capillary\u003c\/li\u003e \u003cli\u003eStainless steel construction for durability\u003c\/li\u003e \u003cli\u003eBulb size 3\/8\" diameter x 3\" length\u003c\/li\u003e \u003cli\u003e1\/2\" threaded connection\u003c\/li\u003e \u003cli\u003eInsulation depth 1-1\/2\"\u003c\/li\u003e \u003cli\u003eCapillary diameter 5\/64\"\u003c\/li\u003e \u003cli\u003ePressure rating 255 PSI at 300°F\u003c\/li\u003e \u003cli\u003eIncludes 121371 mounting clamp\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTrustworthy performance for precise temperature control in commercial heating and cooling systems, backed by Honeywell's engineering legacy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605267988702,"sku":"1749","price":309.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00360529_875f6c4d-985d-4b97-8088-760f747efb16.jpg?v=1765811142"},{"product_id":"quiet-one-s10046-kickspace-heater-aquastat","title":"Quiet-One S10046 Kickspace Heater Aquastat","description":"\u003cdiv\u003e\n\u003cp\u003eThe Quiet-One S10046 Kickspace Heater Aquastat is the essential regulation unit for Quiet-One kickspace heaters. This aquastat provides precise temperature control for hydronic heating systems, helping maintain consistent warmth while optimizing energy use. Compatible with KS2004\/KS2006\/KS2008\/KS2010, it serves as a reliable replacement part for existing installations and keeps your compact space heater running at peak efficiency.\u003c\/p\u003e \u003cp\u003eKey features:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eCompatibility\u003c\/b\u003e: specifically designed for Quiet-One kickspace heater models KS2004, KS2006, KS2008, and KS2010, ensuring a seamless replacement that preserves system integrity and doesn't require additional adapters or rewiring.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePrecise control\u003c\/b\u003e: delivers stable temperatures, minimizes boiler cycling, and helps maintain comfortable room conditions with efficient hydronic performance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurable construction\u003c\/b\u003e: built for the demands of residential heating, with corrosion-resistant components and robust wiring connections that withstand frequent heating cycles.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEasy install\u003c\/b\u003e: a straightforward replacement part for DIY or professional service, featuring standard terminals and clear mounting layout for quick retrofits.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnergy-friendly operation\u003c\/b\u003e: supports optimized boiler load, reduces energy waste, and can extend the life of your Quiet-One kickspace heater by maintaining efficient flow and heat output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605448212702,"sku":"78127","price":19.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00340565_ab3614f1-90dd-42f7-88c9-317f534fec68.jpg?v=1765819321"},{"product_id":"raypak-007392f","title":"Raypak 007392F Tank Aquastat Control Kit","description":"\u003cdiv\u003e\n\u003cp\u003eRaypak 007392F is a replacement \u003cb\u003eTank Aquastat Control Kit\u003c\/b\u003e designed to replace 600887. This Raypak control kit delivers precise temperature regulation and reliable performance for your heating system.\u003c\/p\u003e \u003cp\u003eDesigned for seamless compatibility with Raypak heaters, the \u003cb\u003eTank Aquastat Control Kit\u003c\/b\u003e brings accurate temperature control to your system. It helps maintain safe, consistent water temperature, reduces cycling, and supports efficient energy use. The kit simplifies maintenance with a straightforward replacement process, so downtime is minimized. Crafted with durable sensors and rugged connectors, it’s built to withstand typical boiler and pool equipment environments. Whether you’re replacing a failed control or upgrading aging components, this kit delivers dependable performance. Its plug-and-play design minimizes installation time and lowers the risk of mis-wiring, making it a smart upgrade for both DIY and professional service.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cb\u003eReplaces 600887\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003ePrecise temperature control\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eDurable construction for long life\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eEasy, tool-free installation\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eCompatible with Raypak pool and spa heaters\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eOrder today to ensure your system operates with trusted Raypak performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605454012638,"sku":"335653","price":576.72,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00371099_8262adaa-81d7-4cc3-8048-f14d1ee8192e.jpg?v=1765809045"},{"product_id":"resideo-honeywell-home-w8735y1000-aquastat-controller-reset-module-and-sensor","title":"Resideo - Honeywell Home W8735Y1000 Aquastat Controller Reset Module and Sensor","description":"\u003cdiv\u003e\n\u003cp\u003eThe W8735Y1000 Aquastat Controller Reset Module and Sensor from Resideo\/Honeywell Home delivers precise reset control for outdoor boiler setups. This reset module and sensor is designed for use with L7224\/L7248 series aquastat controllers, providing reliable monitoring of boiler temperature under outdoor conditions.\u003c\/p\u003e \u003cp\u003eEngineered for rugged outdoor environments, the W8735Y1000 helps prevent boiler cycling issues and protects equipment by delivering stable reset signals under varying ambient conditions. It integrates with existing controllers and simplifies installation with its compact, weather-resistant design. This module and sensor combination helps maintain optimum efficiency, extend component life, and ensure reliable boiler performance across seasons.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eCompatibility\u003c\/b\u003e: Works with L7224\/L7248 series aquastat controllers\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePower\u003c\/b\u003e: 24 VAC, 60 Hz supply\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range\u003c\/b\u003e: -30 to 150°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHumidity tolerance\u003c\/b\u003e: 0–95% relative humidity, non-condensing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions\u003c\/b\u003e: 4.56\" W x 1.25\" D x 5.56\" H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplication\u003c\/b\u003e: Outdoor-rated for reliable outdoor boiler control\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBacked by Resideo\/Honeywell Home quality, this outdoor-rated reset solution is a smart upgrade for any heating system looking to improve safety and efficiency without adding complexity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605468266718,"sku":"278873","price":310.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378977_27090c2a-68a2-4b23-99ff-c1749f211cf6.jpg?v=1765820142"},{"product_id":"resideo-honeywell-home-w8735s1000-aquastat-controller-wireless-outdoor-reset-module","title":"Resideo - Honeywell Home W8735S1000 Aquastat Controller Wireless Outdoor Reset Module","description":"\u003cdiv\u003e\n\u003cp\u003eW8735S1000 Aquastat Controller is a high-performance wireless outdoor reset module from Resideo\/Honeywell Home. This Outdoor Reset Kit optimizes boiler efficiency by adjusting water temperature based on outdoor temperatures, delivering comfortable heat and lower energy use.\u003c\/p\u003e\n\u003cp\u003eThe kit includes Module #50022037-002 and Outdoor Sensor #C7089u Envi, providing a ready-to-install solution for residential heating systems. With a wireless design, it reduces wiring clutter while maintaining precise control in all weather conditions.\u003c\/p\u003e\n\u003cp\u003eTrust in Resideo\/Honeywell Home technology to keep you warmer when you need it and cooler when you don’t, helping you manage energy costs without sacrificing comfort.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eWireless outdoor reset communication\u003c\/b\u003e between sensor and module for reliable boiler control\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncludes module 50022037-002\u003c\/b\u003e for quick, plug‑in installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOutdoor sensor C7089u Envi\u003c\/b\u003e delivers accurate outdoor temperature readings\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEasy installation\u003c\/b\u003e with standard boiler systems and compatible hydronic setups\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eImproved energy efficiency\u003c\/b\u003e and seasonal comfort through optimized water temperature\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurable, weatherproof design\u003c\/b\u003e for outdoor sensing and long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605468299486,"sku":"127226","price":463.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378975_96068a03-f597-424b-ab57-51bdbf505686.jpg?v=1765824026"},{"product_id":"resideo-honeywell-home-l8100b1128-aquastat-controller","title":"Resideo - Honeywell Home L8100B1128 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe L8100B1128 Aquastat Controller from Resideo - Honeywell Home delivers dependable temperature control for water heaters and hydronic systems. This high-limit aquastat features a 3\/8 inch diameter bulb and a 39 inch capillary, with well immersion for accurate sensing and reliable performance in mixed heating environments.\u003c\/p\u003e \u003cp\u003eWith UL, CSA, and AGA approvals, it provides safe operation and easy integration. The SPST contact configuration is rated 2 A at 24 VAC (millivolt), and it breaks on temperature rise to prevent overheating. The unit supports a fixed differential: 5°F for the controller and 20°F for the energy cut-off switch.\u003c\/p\u003e \u003cp\u003eDesigned for water heaters and hydronic systems, it includes 3\/4 inch conduit connection, an internal adjustment screw, insulation depth of 1-1\/2 inches, and an overall footprint of 2\" W x 2-1\/8\" D x 5-5\/8\" H.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e 100–180°F operating, with high limit up to 210°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensor and durability:\u003c\/b\u003e 3\/8\" diameter bulb, 39\" capillary, well immersion\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical:\u003c\/b\u003e SPST contact, 2 A at 24 VAC; breaks on temperature rise\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnergy cutoff:\u003c\/b\u003e 200°F rating; fixed differential 5°F (controller) and 20°F (energy cut-off switch)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections:\u003c\/b\u003e 3\/4\" conduit; internal adjustment screw\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e suitable for water heaters and hydronic systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA, AGA\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions \u0026amp; insulation:\u003c\/b\u003e 2\" W x 2-1\/8\" D x 5-5\/8\" H; insulation depth 1-1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605468496094,"sku":"2242","price":353.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378265_e5a6d1aa-fde4-42fa-ab12-a60871a6d474.jpg?v=1765812528"},{"product_id":"resideo-honeywell-home-l4006b1007-aquastat-controller","title":"Resideo - Honeywell Home L4006B1007 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller from Resideo Honeywell Home L4006B1007 provides precise boiler and storage-tank temperature control. This Aquastat Controller combines reliable direct immersion in an immersion well with a SPST contact rating and a fixed 5°F differential, ideal for maintaining steady temperatures in heating systems.\u003c\/p\u003e \u003cp\u003eOperating range 100–240°F with a maximum rating of 150°F, it supports a broad set of boiler applications and storage tanks. The unit features a 3\/4 inch conduit connection and screw terminals for easy wiring, plus UL, CSA, and AGA approvals for confidence in safety and compatibility. The sensing bulb is filled with either toluene or silicone oil for stable responses, and it includes the 1\/2 inch well (part 123869A) to simplify installation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDirect immersion\u003c\/b\u003e: Horizontal or vertical well mounting for flexible installation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eRobust electricals\u003c\/b\u003e: SPST contact; 8A at 120V AC; 5.1A at 240V AC (full load); 48A at 120V \/ 30.6A at 240V (locked rotor); millivolt capability.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSolid construction\u003c\/b\u003e: 3\/4 inch conduit connection with screw terminals; compact enclosure 2\" W x 2-1\/8\" D x 5-5\/8\" H.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing \u0026amp; fluid\u003c\/b\u003e: Bulb filled with toluene or silicone oil; includes 1\/2 inch well (123869A).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications \u0026amp; approvals\u003c\/b\u003e: Ideal for boilers and storage tanks; UL, CSA, AGA approved.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605468627166,"sku":"2148","price":221.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378227_67528266-841b-4e08-8fdc-8da167e2d4cb.jpg?v=1765812311"},{"product_id":"resideo-honeywell-home-l4006e1117-aquastat-controller","title":"Resideo - Honeywell Home L4006E1117 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe L4006E1117 Aquastat Controller from Resideo Honeywell Home delivers precise boiler temperature control with a direct immersion copper bulb and a 1-1\/2 inch capillary for reliable sensing. This \u003cb\u003eAquastat Controller\u003c\/b\u003e supports direct horizontal or vertical well immersion for flexible installation.\u003c\/p\u003e \u003cp\u003eOperating over a range of 100 to 240 Deg F, with a maximum temperature rating of 150 Deg F, it pairs safety with efficiency. The \u003cb\u003eSPST\u003c\/b\u003e contact with break on temperature rise handles standard boiler loads, while 3\/4 inch conduit or screw terminal connections simplify wiring.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDirect immersion well\u003c\/b\u003e mounting for dependable sensing.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBulb and capillary\u003c\/b\u003e 3\/8\" diameter x 2-7\/8\" bulb; 1-1\/2\" capillary.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical ratings\u003c\/b\u003e robust loads at 120\/240 VAC and millivolt DC options.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e ideal for boiler and storage tank control.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConstruction\u003c\/b\u003e 3\/4\" conduit connection; screw terminal; sensing liquid: toluene or silicone oil; includes 123870A 3\/4 Inch Well.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals\u003c\/b\u003e UL, CSA, AGA certified for reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions\u003c\/b\u003e 2\" W x 2-1\/8\" D x 5-5\/8\" H; 200 psi capillary, 255 psi immersion well.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605468692702,"sku":"110727","price":286.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378234_f7faa3a9-03e9-4288-9581-6167f62be10b.jpg?v=1765821765"},{"product_id":"resideo-honeywell-home-l4006e1000-aquastat-controller","title":"Resideo - Honeywell Home L4006E1000 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe L4006E1000 Aquastat Controller from Resideo (Honeywell Home) delivers precise boiler temperature control for reliable boiler operation. It features a copper sensing bulb (3\/8\" diameter x 2-7\/8\" length) and a 1-1\/2\" capillary, enabling direct horizontal or vertical immersion for versatile installation. This high-limit, manual-reset aquastat is ideal for boilers and storage tanks.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e 130–270°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaximum rating:\u003c\/b\u003e 150°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContacts:\u003c\/b\u003e SPST, Break on Temperature Rise; 8A @ 120V AC \/ 1.3A @ 240V AC (full load); 48A @ 120V AC \/ 30.6A @ 240V AC (locked rotor); 0.25A @ 0.25–12V DC (millivolt)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections:\u003c\/b\u003e 3\/4\" conduit, screw terminals\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing \u0026amp; construction:\u003c\/b\u003e Copper bulb (3\/8\" Ø x 2-7\/8\" L); capillary 1-1\/2\"; sensing liquid toluene or silicone oil\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions \u0026amp; compatibility:\u003c\/b\u003e Overall 2\" W x 2-1\/8\" D x 5-5\/8\" H; well spud size 1\/2\"\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications \u0026amp; approvals:\u003c\/b\u003e Boiler, storage tank; UL, CSA, AGA\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for boiler and storage-tank applications, this aquastat features a robust immersion well, reliable manual reset, and compatibility with standard 3\/4\" conduit wiring. Its UL, CSA, and AGA approvals meet quality and safety standards, making it a trusted choice for professional installers and homeowners seeking dependable boiler control and temperature safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469053150,"sku":"328571","price":141.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378230_f154f4ca-2684-44df-9c84-075ce96925f0.jpg?v=1765810407"},{"product_id":"resideo-honeywell-home-l4006h1004-aquastat-controller","title":"Resideo - Honeywell Home L4006H1004 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eResideo - Honeywell Home L4006H1004 Aquastat Controller\u003c\/b\u003e provides precise boiler and storage-tank temperature control for dependable heating performance. The unit uses a Type 3\/8 inch diameter x 2-7\/8 inch length copper sensing bulb, a 1-1\/2 inch capillary, and a direct horizontal\/vertical immersion well for flexible installation in tight spaces. With a sensing range of 100 to 240°F and a maximum temperature rating of 150°F, this aquastat delivers reliable high-limit protection across residential and commercial boilers and storage tanks. UL and CSA approvals ensure safety, reliability, and code compliance in demanding environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eType: SPST, Break on Temperature Rise\u003c\/li\u003e \u003cli\u003eElectrical ratings: 8 A at 120 V AC \/ 5.1 A at 240 V AC (full load)\u003c\/li\u003e \u003cli\u003eLocked rotor: 48 A at 120 V AC \/ 30.6 A at 240 V AC\u003c\/li\u003e \u003cli\u003eMillivolt capability: 0.25 A at 0.25–12 V DC\u003c\/li\u003e \u003cli\u003eConnection: 3\/4 inch conduit, screw terminal\u003c\/li\u003e \u003cli\u003eApplication: Boiler, Storage Tank\u003c\/li\u003e \u003cli\u003eSensing assembly: copper bulb 3\/8\" dia x 2-7\/8\" L; capillary 1-1\/2\" L; filled with toluene or silicone oil\u003c\/li\u003e \u003cli\u003eImmersion well: direct horizontal\/vertical\u003c\/li\u003e \u003cli\u003eIncluded: factory set at 240°F; heat-conductive compound; bracket for strap-on mounting\u003c\/li\u003e \u003cli\u003eApprovals: UL, CSA\u003c\/li\u003e \u003cli\u003eDimensions: 2\" W x 2-1\/8\" D x 5-5\/8\" H\u003c\/li\u003e \u003cli\u003ePressure ratings: 200 psi (capillary bulb); 255 psi (immersion well)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for reliable boiler control and energy-efficient operation, this aquastat combines rugged construction with straightforward installation and proven performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469085918,"sku":"2153","price":257.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378237_20e483e5-1f64-4d38-b747-cac9f14448fe.jpg?v=1765812342"},{"product_id":"resideo-honeywell-home-l4006a1009-aquastat-controller","title":"Resideo - Honeywell Home L4006A1009 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller L4006A1009 from Resideo Honeywell Home delivers precise boiler temperature control for reliable heating system performance. This Aquastat Controller uses a copper bulb (3\/8 inch diameter x 2-7\/8 inch length) with a 1-1\/2 inch capillary and direct horizontal\/vertical immersion, offering a fixed 5°F differential and a sensing setup that suits boiler and storage-tank applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSensing and immersion:\u003c\/b\u003e Copper bulb (3\/8\" dia x 2-7\/8\" long) with a 1-1\/2\" capillary for direct horizontal or vertical immersion.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFixed differential:\u003c\/b\u003e 5°F fixed differential for stable boiler control.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e Sensing range of 100–240°F with a maximum rating of 150°F.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical and contact:\u003c\/b\u003e SPST contact with break on temperature rise; 8 A @120 VAC \/ 5.1 A @240 VAC (full load); 48 A @120 VAC \/ 30.6 A @240 VAC (locked rotor); 0.25 A @0.25–12 V DC (millivolt).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure and connections:\u003c\/b\u003e Capillary 200 psi; immersion well 255 psi; 3\/4\" conduit and screw-terminal connections.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications and approvals:\u003c\/b\u003e Ideal for boiler and storage-tank use; UL, CSA, and AGA approvals; includes 1\/2\" immersion well (123869A).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePhysical specs:\u003c\/b\u003e Overall dimensions 2\" W x 2-1\/8\" D x 5-5\/8\" H; sensing fluid: toluene or silicone oil.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469151454,"sku":"2141","price":213.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378221_d5c05ad9-d5a5-4809-bfe7-87993832fc6e.jpg?v=1765812276"},{"product_id":"resideo-honeywell-home-l4006a1017-aquastat-controller","title":"Resideo - Honeywell Home L4006A1017 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller from Resideo Honeywell Home delivers precise boiler control for residential and commercial systems. The L4006A1017 model features a copper sensing bulb (3\/8 in diameter x 2-7\/8 in length) with a 1-1\/2 in capillary and direct immersion in a well for accurate high\/low limit operation, offering a temperature range of 100–240°F and an adjustable differential of 5–30°F. The unit carries a maximum temperature rating of 150°F.\u003c\/p\u003e\n\u003cp\u003eUL, CSA, and AGA approvals ensure safe compatibility with boiler and storage tank setups. It uses a 3\/4 inch conduit connection and screw-terminal wiring for easy installation, with SPST contact configuration and break-on-temperature-rise operation.\u003c\/p\u003e\n\u003cp\u003eKey electrical and sensing details support versatile heating applications, including: \u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eSPST contacts\u003c\/b\u003e that break on temperature rise for reliable safety shutoff\u003c\/li\u003e \u003cli\u003eLoad ratings up to 8 A at 120 VAC \/ 5.1 A at 240 VAC (full load); 48 A at 120 VAC \/ 30.6 A at 240 VAC (locked rotor); 0.25 A at 0.25–12 V DC (millivolt)\u003c\/li\u003e \u003cli\u003ePressure ratings of 200 psi (capillary bulb) and 255 psi (immersion well)\u003c\/li\u003e \u003cli\u003eSensing bulb filled with \u003ci\u003etoluene\u003c\/i\u003e or \u003ci\u003esilicone oil\u003c\/i\u003e for stable sensing\u003c\/li\u003e \u003cli\u003eIncludes 123869A 1\/2 inch well for flexible installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469184222,"sku":"2142","price":231.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378222_560f3c20-5107-463d-a28f-87b9f675cc9d.jpg?v=1765812285"},{"product_id":"resideo-honeywell-home-l4006a1967-aquastat-controller","title":"Resideo - Honeywell Home L4006A1967 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller by Resideo—Honeywell Home L4006A1967 delivers precise boiler and storage-tank temperature control with dependable high\/low limit protection. Designed for direct horizontal or vertical immersion, it uses a copper sensing bulb and an optional capillary for flexible sensing. With an adjustable differential of 5–30°F and a range of 100–240°F, it ensures reliable temperature control for your system while staying within safe operating parameters. This UL, CSA, and AGA approved unit features SPST contact with a break-on-temperature-rise action for robust boiler control.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Boiler and storage tank temperature control with high\/low limit protection\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePrimary sensing:\u003c\/b\u003e 3\/8 inch diameter x 2-7\/8 inch copper bulb; 1-1\/2 inch capillary length\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e 100–240°F with a maximum rating of 150°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDifferential:\u003c\/b\u003e Adjustable 5–30°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical\u003c\/b\u003e: SPST contact, break on temperature rise; 3\/4 inch conduit and screw terminals\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eRatings:\u003c\/b\u003e 8 A at 120V AC \/ 5.1 A at 240V AC (full load); 48 A at 120V AC \/ 30.6 A at 240V AC (locked rotor); 0.25 A at 0.25–12 V DC (millivolt)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 2\" W x 2-1\/8\" D x 5-5\/8\" H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing liquid:\u003c\/b\u003e Toluene or silicone oil\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure rating:\u003c\/b\u003e 200 psi (capillary bulb), 255 psi (immersion well)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncludes:\u003c\/b\u003e Factory stop set at 240°F; 1\/2 inch well (123869A)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA, AGA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469282526,"sku":"2146","price":179.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378225_79e575cf-f53c-4e3f-b92c-104bbfa6cdf6.jpg?v=1765812304"},{"product_id":"resideo-honeywell-home-l6006a1145-aquastat-controller","title":"Resideo - Honeywell Home L6006A1145 Aquastat Controller","description":"\u003cdiv\u003eThe L6006A1145 Aquastat Controller from Resideo—Honeywell Home delivers precise boiler and storage-tank temperature control for reliable heating performance. Featuring a 3\/8 inch diameter copper sensing bulb with a 2-7\/8 inch length and a 3 inch capillary, it offers direct horizontal well immersion, high\/low limit operation, and dependable circulator control. With an adjustable differential of 5 to 30 degrees Fahrenheit and a broad sensing range of 100 to 240 deg F, this unit adapts to varying boiler and storage-tank demands. UL and CSA approvals ensure safety and reliability, while robust electrical ratings handle demanding environments: 8 A at 120 VAC \/ 5.1 A at 240 VAC (full load), 48 A at 120 VAC \/ 30.6 A at 240 VAC (locked rotor), and 0.25 A at 0.25–12 VDC (millivolt). The SPDT contact configuration provides versatile on\/off control for your heating system. Key features:\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSPDT contact configuration\u003c\/b\u003e for flexible control\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3\/4 inch conduit\u003c\/b\u003e connection with screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e100–240°F operating range\u003c\/b\u003e with adjustable \u003cb\u003e5–30°F differential\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDirect immersion well\u003c\/b\u003e and copper sensing bulb (3\/8 in diameter, 2-7\/8 in bulb, 3 in capillary)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUL\/CSA approvals\u003c\/b\u003e for safety and compliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFactory stop at 240°F\u003c\/b\u003e and included heat-conductive compound\u003c\/li\u003e\n\u003c\/ul\u003e Applications include boilers and storage tanks, making this aquastat a reliable choice for HVAC installations.\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469348062,"sku":"2225","price":178.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378258_d25adf0c-bcd3-4ba5-905a-133e4bfeeeac.jpg?v=1765812495"},{"product_id":"resideo-honeywell-home-l4006b1155-aquastat-controller","title":"Resideo - Honeywell Home L4006B1155 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eAquastat Controller by Resideo - Honeywell Home L4006B1155 delivers reliable boiler control for residential systems. Designed for direct horizontal or vertical immersion wells, it uses a copper sensing bulb and a 3-inch capillary to monitor temperatures from 100 to 240°F, with a maximum rating of 150°F. Ideal for boiler and storage-tank applications.\u003c\/p\u003e \u003cp\u003eBuilt for durability and safety, this unit features SPST contacts with break-on-temperature-rise and robust load ratings. It supports 8 A at 120V AC \/ 5.1 A at 240V AC (full load) and 48 A \/ 30.6 A (locked rotor), plus 0.25 A at 0.25–12 V DC. Connections include a 3\/4 inch conduit and screw terminals; UL-listed, CSA and AGA approved.\u003c\/p\u003e \u003cp\u003eThe sensing bulb is filled with toluene or silicone oil. The differential is adjustable from 5–30°F. Dimensions measure 2\" W x 2-1\/8\" D x 5-5\/8\" H, with pressure ratings of 200 psi on the capillary bulb and 255 psi in the immersion well. Includes factory stop at 240°F and a heat-conductive compound.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eImmersion options:\u003c\/b\u003e Direct horizontal\/vertical well for boiler and storage-tank systems.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing assembly:\u003c\/b\u003e Copper bulb (3\/8\" Ø x 2-7\/8\" L) with 3\" capillary; oil-filled.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature control:\u003c\/b\u003e Adjustable differential 5–30°F; range 100–240°F; max 150°F.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical and connections:\u003c\/b\u003e SPST contact; screw terminals; 3\/4\" conduit; UL-listed, CSA, AGA approved.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469380830,"sku":"2149","price":185.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378228_faab8634-ce7d-45bd-8e6f-785a23daabfc.jpg?v=1765812319"},{"product_id":"resideo-honeywell-home-l4006b1163-aquastat-controller","title":"Resideo - Honeywell Home L4006B1163 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller from Resideo—Honeywell Home L4006B1163 delivers precise boiler temperature control for heating systems. Built for boilers and storage tanks, this reliable Aquastat Controller combines a copper bulb sensor, long capillary and robust immersion well to regulate temperatures smoothly and safely.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSensor and sensing bulb:\u003c\/b\u003e Type 3\/8\" diameter x 2-7\/8\" length copper bulb with a 3\" capillary; direct horizontal\/vertical immersion in the well.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating range:\u003c\/b\u003e 100–240 °F temperature range with a maximum rating of 150 °F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eElectrical and contact:\u003c\/b\u003e SPST contact, break on temperature rise; full-load ratings: 8 A at 120 V AC or 5.1 A at 240 V AC; locked rotor: 48 A at 120 V AC \/ 30.6 A at 240 V AC; millivolt: 0.25 A at 0.25–12 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConnections:\u003c\/b\u003e 3\/4\" conduit with screw-terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e ideal for boiler and storage-tank systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMechanical and pressure specs:\u003c\/b\u003e differential 5–30 °F adjustable; sensing liquids: toluene or silicone oil; capillary bulb 200 psi, immersion well 255 psi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCertifications:\u003c\/b\u003e UL, CSA, AGA approved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 2\" W × 2-1\/8\" D × 5-5\/8\" H.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for reliable operation and safe integration into heating systems, this Aquastat Controller helps optimize performance while protecting equipment and ensuring consistent temperature control.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469544670,"sku":"2150","price":151.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378229_7dd982cb-e30e-4977-b865-50c14a84cee5.jpg?v=1765812322"},{"product_id":"resideo-honeywell-home-l4006e1125-aquastat-controller","title":"Resideo - Honeywell Home L4006E1125 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eL4006E1125 Aquastat Controller\u003c\/b\u003e from Resideo\/Honeywell Home is a reliable boiler control solution for both boilers and storage tanks. This Aquastat Controller delivers precise temperature management with a 100 to 200°F sensing range and a high-limit, manual-reset feature to prevent overheating in warming systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cbsensing and bulb:\u003e Type 3\/8\" diameter x 2-7\/8\" length copper bulb with a 3\" capillary; sensing liquid is toluene or silicone oil for accurate temperature response.\u003c\/bsensing\u003e\u003c\/li\u003e \u003cli\u003e\u003cbimmersion:\u003e Direct horizontal\/vertical well immersion for flexible installation in tight spaces.\u003c\/bimmersion:\u003e\u003c\/li\u003e \u003cli\u003e\u003cbtemperature range and limits:\u003e 100–200°F sensing range; maximum temperature rating 150°F; high-limit with manual reset.\u003c\/btemperature\u003e\u003c\/li\u003e \u003cli\u003e\u003cbelectrical and contacts:\u003e SPST contact configuration; break on temperature rise; 8 A at 120V AC \/ 5.1 A at 240V AC (full load); 48 A at 120V AC \/ 30.6 A at 240V AC (locked rotor); 0.25 A at millivolt.\u003c\/belectrical\u003e\u003c\/li\u003e \u003cli\u003e\u003cbconnections and compatibility:\u003e 3\/4\" conduit with screw terminal; suitable for boiler and storage tank applications; UL, CSA, AGA approved.\u003c\/bconnections\u003e\u003c\/li\u003e \u003cli\u003e\u003cbspecifications:\u003e Overall dimensions 2\" W x 2-1\/8\" D x 5-5\/8\" H; capillary 200 psi; immersion well 255 psi.\u003c\/bspecifications:\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eEngineered for reliable automatic temperature control, this aquastat delivers durable boiler control with compliant safety standards, making it a trusted choice for heating systems and storage tanks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469806814,"sku":"5995","price":286.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378235_0c2c198f-0dfc-4da8-8c05-a7189e0fc00e.jpg?v=1765821043"},{"product_id":"resideo-honeywell-home-l4006e1067-aquastat-controller","title":"Resideo - Honeywell Home L4006E1067 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller, model L4006E1067 from Resideo - Honeywell Home, delivers precise boiler temperature control for reliable operation.\u003c\/p\u003e\n\u003cp\u003eAs a robust boiler controller with high-limit protection and manual reset, it supports direct horizontal or vertical well immersion, using a copper bulb and a 3-inch capillary for fast, accurate sensing. This is ideal for dependable temperature control in boilers and storage tanks, combining gas- and electric-compatible specifications with durable construction.\u003c\/p\u003e\n\u003cp\u003eApproved by UL, CSA, and AGA, this SPST unit provides reliable high-limit protection and clear cut-off on temperature rise, making it a trusted choice for professional installations requiring solid performance and safety compliance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003ePrimary sensing\u003c\/b\u003e: 3\/8\" copper bulb, 2-7\/8\" length; 3\" capillary; direct immersion (horizontal or vertical); sensing liquid: toluene or silicone oil\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemp range\u003c\/b\u003e: 130–270°F; maximum temp rating 150°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical ratings\u003c\/b\u003e: 8 A @ 120V AC \/ 5.1 A @ 240V AC (full load); 48 A @ 120V AC \/ 30.6 A @ 240V AC (locked rotor); 0.25 A @ 0.25–12 V DC\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContact\u003c\/b\u003e: SPST with break on temperature rise\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections\u003c\/b\u003e: 3\/4\" conduit; screw terminal\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e: boiler and storage tank systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals\u003c\/b\u003e: UL, CSA, AGA\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions \u0026amp; pressure\u003c\/b\u003e: 2\" W x 2-1\/8\" D x 5-5\/8\" H; capillary 200 PSI; immersion well 255 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncluded\u003c\/b\u003e: factory stop at 250°F; heat-conductive compound; well adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469839582,"sku":"2151","price":248.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378232_35f5d05c-35f2-4fae-acf0-44deaed8a5a0.jpg?v=1765812333"},{"product_id":"resideo-honeywell-home-l6006a1244-aquastat-controller","title":"Resideo - Honeywell Home L6006A1244 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller from Resideo Honeywell Home (L6006A1244) delivers precise boiler temperature control for reliable heating system performance. Designed for direct immersion in a well or with a sensing bulb, it manages boiler and storage-tank temperatures with built-in high\/low limit controls.\u003c\/p\u003e\n\u003cp\u003eKey specifications include a sensing bulb of 3\/8 inch diameter x 2-7\/8 inch length copper bulb, a 3 inch capillary, and flexible installation options via 3\/4 inch conduit or screw terminals. Temperature sensing ranges from 100 to 240 Deg F with an adjustable 5 to 30 Deg F differential, and a maximum temperature rating of 150 Deg F. The unit carries SPDT contacts and substantial electrical ratings for 120V and 240V systems, making it suitable for boiler and storage-tank applications.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e3\/4 inch conduit or screw-terminal connection for easy wiring\u003c\/li\u003e\n\u003cli\u003eSPDT contact configuration for reliable switching\u003c\/li\u003e\n\u003cli\u003eTemperature range: 100–240 Deg F; adjustable differential: 5–30 Deg F\u003c\/li\u003e\n\u003cli\u003eElectrical ratings: 8 A @ 120V AC \/ 5.1 A @ 240V AC (full load); 48 A @ 120V AC \/ 30.6 A @ 240V AC (locked rotor); 0.25 A @ 0.25–12 V DC (millivolt)\u003c\/li\u003e\n\u003cli\u003ePressure ratings: 200 psi (capillary bulb); 255 psi (immersion well)\u003c\/li\u003e\n\u003cli\u003eSensing bulb fill: toluene or silicone oil\u003c\/li\u003e\n\u003cli\u003eDimensions: 2 in W x 2-1\/8 in D x 5-5\/8 in H\u003c\/li\u003e\n\u003cli\u003eApplications: Boiler and Storage Tank; Approvals: UL, CSA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605469872350,"sku":"2226","price":169.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378259_92bf976a-ed0b-463c-992a-d33cad510453.jpg?v=1765812497"},{"product_id":"resideo-honeywell-home-l4006a1678-aquastat-controller","title":"Resideo - Honeywell Home L4006A1678 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eAquastat Controller\u003c\/b\u003e for boilers and storage tanks—the Resideo Honeywell Home L4006A1678 delivers precise, reliable temperature control. This rugged control combines a copper sensing bulb, a long capillary, and a versatile immersion well, designed for direct horizontal or vertical mounting and dependable high\/low limit operation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSensing assembly:\u003c\/b\u003e 3\/8\" diameter x 2-7\/8\" copper bulb with a 3\" capillary.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eImmersion:\u003c\/b\u003e Direct horizontal\/vertical well immersion for flexible installation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range \u0026amp; limit:\u003c\/b\u003e 100–240°F operating range; maximum temperature rating 150°F.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical ratings:\u003c\/b\u003e SPST contact; 8A at 120V AC \/ 5.1A at 240V AC (full load); 48A at 120V AC \/ 30.6A at 240V AC (locked rotor); 0.25A at 0.25–12V DC (millivolt).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConfiguration \u0026amp; connections:\u003c\/b\u003e Break on temperature rise; 3\/4\" conduit; screw terminal.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Suitable for boilers and storage tanks.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA, AGA.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 2\" W × 2-1\/8\" D × 5-5\/8\" H.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDifferential \u0026amp; pressure:\u003c\/b\u003e Adjustable 5–30°F; capillary bulb 200 PSI, immersion well 255 PSI.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing liquid:\u003c\/b\u003e Toluene or Silicone Oil.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eExtras:\u003c\/b\u003e Factory stop at 240°F and heat-conductive compound included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470003422,"sku":"2144","price":170.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378223_033e3f1e-b13f-4b62-96ee-b5277911952e.jpg?v=1765812288"},{"product_id":"resideo-honeywell-home-l4006a2007-aquastat-controller","title":"Resideo - Honeywell Home L4006A2007 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller L4006A2007 from Resideo\/Honeywell Home delivers precise boiler control and reliable storage-tank temperature management. This durable Aquastat Controller combines a copper bulb, long capillary, and a direct immersion well for fast, accurate sensing, making it ideal as a boiler control or storage-tank regulator. The unit supports a wide temperature range (100 to 240 °F) with an adjustable differential (5 to 30 °F) to optimize energy use while safeguarding equipment. Its robust electrical ratings and SPST contact with break-on-temperature rise provide dependable operation in demanding systems. Approved by UL, CSA, and AGA, it’s built for longevity in professional installations.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Boiler, Storage Tank\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTemperature sensing:\u003c\/b\u003e 3\/8 in diameter x 2-7\/8 in length copper bulb; 3 in capillary; direct immersion well\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eElectrical connections:\u003c\/b\u003e 3\/4 in conduit; screw terminal; SPST contact\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRatings:\u003c\/b\u003e 8 A at 120 V AC \/ 5.1 A at 240 V AC (full load); 48 A at 120 V AC \/ 30.6 A at 240 V AC (locked rotor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePressure \u0026amp; liquids:\u003c\/b\u003e 200 PSI (capillary bulb); 255 PSI (immersion well); sensing liquid: toluene or silicone oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 2 in W x 2-1\/8 in D x 5-5\/8 in H\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDifferential:\u003c\/b\u003e 5–30 °F adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA, AGA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470134494,"sku":"2147","price":149.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378226_615c4fa7-e56f-430a-8c95-d631df860bed.jpg?v=1765812308"},{"product_id":"resideo-honeywell-home-l4006a1959-aquastat-controller","title":"Resideo - Honeywell Home L4006A1959 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eResideo - Honeywell Home L4006A1959 Aquastat Controller is a reliable boiler thermostat and storage tank temperature control device designed for precise regulation and safety. This aquastat features a 3\/8\" copper bulb, 2-7\/8\" length, a 3\" capillary, and a direct horizontal\/vertical immersion well for flexible installation. With a fixed 5°F differential and a temperature range of 40–180°F (maximum rating 150°F), it delivers dependable temperature control for residential and light commercial systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eCopper bulb (3\/8\" diameter x 2-7\/8\" long) with a 3\" capillary and direct immersion well for flexible horizontal or vertical mounting.\u003c\/li\u003e \u003cli\u003eFixed 5°F differential provides stable temperature control between boiler and storage tank.\u003c\/li\u003e \u003cli\u003eOperating range 40–180°F with a 150°F maximum rating, suitable for a variety of heating setups.\u003c\/li\u003e  \u003cli\u003eSPST contact, break on temperature rise; UL, CSA, AGA listed with clear load ratings.\u003c\/li\u003e \u003cli\u003eElectrical ratings: 8 A at 120 VAC \/ 5.1 A at 240 VAC (full load); 48 A at 120 VAC \/ 30.6 A at 240 VAC (locked rotor); 0.25 A at 0.25–12 V DC (millivolt).\u003c\/li\u003e \u003cli\u003eConduit connection of 3\/4\" with screw terminals for secure wiring.\u003c\/li\u003e \u003cli\u003eApplications: boiler and storage tank heating systems; sensing bulb filled with toluene or silicone oil; includes heat-conductive compound.\u003c\/li\u003e \u003cli\u003eOverall dimensions: 2\" W x 2-1\/8\" D x 5-5\/8\" H; pressure ratings 200 psi (capillary bulb) and 255 psi (immersion well).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470167262,"sku":"2145","price":169.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378224_dd10f76f-4062-4a0b-96cb-97e140e5e6f1.jpg?v=1765812295"},{"product_id":"resideo-honeywell-home-l4006g1006-aquastat-controller","title":"Resideo - Honeywell Home L4006G1006 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eAquastat Controller\u003c\/b\u003e by Resideo - Honeywell Home L4006G1006 delivers precise boiler and storage-tank temperature control for reliable heating system performance. This versatile control features a copper bulb sensor, a 4-inch capillary, and direct well immersion for accurate temperature measurement.\u003c\/p\u003e \u003cp\u003eDesigned for robust boiler control and storage-tank applications, it supports flexible installation (horizontal or vertical) and carries UL and CSA approvals for安心 operation. The SPST contact with break on temperature rise adds important safety and reliability to your heating system.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSensing assembly:\u003c\/b\u003e Copper bulb, 3\/8 inch diameter x 2-7\/8 inch length, with a 4 inch capillary\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eImmersion options:\u003c\/b\u003e Direct horizontal\/vertical well immersion; immersion well rated to 255 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e Sensing range 100–200°F with a 150°F maximum rating\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical ratings:\u003c\/b\u003e 8 A @ 120 VAC \/ 1.3 A @ 240 VAC (full load); 48 A @ 120 VAC \/ 30.6 A @ 240 VAC (locked rotor)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContact configuration:\u003c\/b\u003e SPST; break on temperature rise for safety\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections:\u003c\/b\u003e 3\/4 inch conduit; screw terminal\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePhysical size:\u003c\/b\u003e 2\" W x 2-1\/8\" D x 5-5\/8\" H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSensing liquid:\u003c\/b\u003e Toluene or silicone oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470593246,"sku":"286552","price":153.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378236_17fd6f2a-7df1-41c0-8024-a7030da606f3.jpg?v=1765820124"},{"product_id":"resideo-honeywell-home-l6006c1018-aquastat-controller","title":"Resideo - Honeywell Home L6006C1018 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eAquastat Controller\u003c\/b\u003e by Resideo - Honeywell Home L6006C1018 provides precise boiler control with an adjustable high\/low limit for reliable heating performance. This boiler control device supports direct horizontal or vertical surface mounting and uses a copper sensing bulb (3\/8\" diameter x 2-7\/8\" length) with an immersion well option to fit your boiler or storage-tank installation.\u003c\/p\u003e \u003cp\u003eOperating range is 65–200°F with an adjustable differential of 5–30°F, and a factory stop set at 200°F to prevent overshoot. It features SPDT contacts for versatile switching, a 3\/4\" conduit connection, and screw-terminal wiring for secure connections. The unit is UL and CSA approved for safe boiler operation and is designed for both residential and commercial equipment.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eApplication\u003c\/b\u003e: Boiler and storage-tank control\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTemperature control\u003c\/b\u003e: 65–200°F range; 5–30°F adjustable differential; 200°F factory stop; maximum 150°F rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eElectrical\u003c\/b\u003e: SPDT contact; 8 A at 120V AC (full load); 5.1 A at 240V AC; 48 A at 120V\/30.6 A at 240V (locked rotor); millivolt compatibility 0.25 A at 0.25–12 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConnection \u0026amp; sensing\u003c\/b\u003e: 3\/4\" conduit; screw terminals; copper sensing bulb with toluene or silicone oil; direct immersion well or surface mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCertifications\u003c\/b\u003e: UL and CSA approved\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePhysical\u003c\/b\u003e: 2\" W x 2-1\/8\" D x 5-5\/8\" H; factory stop included at 200°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470626014,"sku":"2228","price":160.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00006928_21ea086d-e777-4a58-aaf8-3e3dbd0cfd8c.jpg?v=1765812504"},{"product_id":"resideo-honeywell-home-l4081b1047-aquastat-controller","title":"Resideo - Honeywell Home L4081B1047 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eAquastat Controller\u003c\/b\u003e L4081B1047 from Resideo Honeywell Home delivers precise temperature control for gas\/oil-fired hydronic heating systems. This horizontal immersion controller combines high-limit protection with a flexible low-limit setting to keep boilers safe, efficient, and responsive. With a high-limit range of 130–240°F and a low-limit range of 110–220°F, it adapts to varying boiler loads while the fixed high-limit differential ensures reliable shutoff. This model is designed for horizontal immersion and supports well-spud connections for flexible installation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSPST contact configuration\u003c\/b\u003e for simple on\/off control of boiler circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAdjustable low-limit differential\u003c\/b\u003e from 10 to 25°F, with a fixed 10°F high-limit differential.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e1\/2 in conduit connection\u003c\/b\u003e and a \u003cb\u003ewell-mounted design\u003c\/b\u003e for straightforward installation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eUL and CSA approvals\u003c\/b\u003e ensure safety and compatibility with standard equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eWide temperature ranges\u003c\/b\u003e with high-limit 130–240°F, low-limit 110–220°F, and sensing element up to 265°F.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompact dimensions\u003c\/b\u003e 4-1\/8\"W x 2-3\/4\"D x 3-7\/8\"H for easy retrofit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for professionals seeking a durable, UL\/CSA-approved aquastat with precise control and broad compatibility across gas\/oil-fired hydronic systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470724318,"sku":"2209","price":301.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378255_a8347b9d-bcad-441a-ade6-b93fab521800.jpg?v=1765812470"},{"product_id":"resideo-honeywell-home-l4081b1096-aquastat-controller","title":"Resideo - Honeywell Home L4081B1096 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe L4081B1096 Aquastat Controller is a versatile Aquastat Controller designed for gas\/oil fired hydronic heating systems. This horizontal immersion unit combines multiple controls, high-limit protection, and a circulator interface for dependable boiler operation.\u003c\/p\u003e \u003cp\u003eWith a broad temperature range, the high limit covers 130 to 240 °F while the low limit ranges 110 to 220 °F. The 150 °F switch rating and 265 °F sensing element rating ensure robust performance, while SPST contact configuration supports straightforward wiring across diverse loads (8 A at 120 V AC \/ 5.1 A at 240 V AC full load; 48 A at 120 V AC \/ 30.6 A at 240 V AC locked rotor; plus 0.25 A at 0.25–12 V DC (millivolt), 360 VA transformer load).\u003c\/p\u003e \u003cp\u003eDesigned for horizontal immersion, the controller features 1\/2 inch conduit connections, UL and CSA approvals, and a compact footprint (4-1\/8 in W x 2-3\/4 in D x 3-7\/8 in H). A fixed 10 °F differential provides stable differential control, while pressure ratings of 200 PSI (well-mounted) and 100 PSI (direct immersion) support demanding systems. Insulation depth is 3 inches with a 7\/8 inch knockout and humidity tolerance up to 95% RH non-condensing.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Gas\/oil fired hydronic heating system\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature control:\u003c\/b\u003e High limit 130–240 °F; Low limit 110–220 °F; differential 10 °F (fixed)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical \u0026amp; wiring:\u003c\/b\u003e SPST contact; 8 A\/120 V, 5.1 A\/240 V full load; 48 A\/120 V, 30.6 A\/240 V locked rotor; 0.25 A at 0.25–12 V DC (millivolt)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCertifications:\u003c\/b\u003e UL and CSA approved\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePhysical specs:\u003c\/b\u003e 4-1\/8\" W x 2-3\/4\" D x 3-7\/8\" H; 1\/2\" conduit; 3\" insulation; 7\/8\" knockout; 0–95% RH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470789854,"sku":"12312","price":293.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378256_fd658d06-de5f-43d2-bc6a-d080de285109.jpg?v=1765808784"},{"product_id":"resideo-honeywell-home-l6081a1036-aquastat-controller","title":"Resideo - Honeywell Home L6081A1036 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eAquastat Controller\u003c\/b\u003e for gas\/oil fired hydronic heating systems delivers precise boiler temperature control. The L6081A1036 horizontal immersion unit combines high-limit safety with low-limit and circulator control for reliable, efficient operation.\u003c\/p\u003e \u003cp\u003eKey specifications and features include:\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePrimary function\u003c\/b\u003e: High-limit SPST switch and low-limit SPDT with circulator control for flexible wiring in hydronic HVAC setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTemperature ranges\u003c\/b\u003e: High limit 130–240°F; Low limit 110–220°F; sensing element up to 265°F; fixed high-limit differential of 10°F; adjustable low-limit differential from 10–25°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eContacts\u003c\/b\u003e: SPST (High Limit) and SPDT (Low Limit and Circulator) configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eElectrical and load\u003c\/b\u003e: 8 A @120V AC \/ 5.1 A @240V AC (full load); 48 A @120V \/ 30.6 A @240V (locked rotor); 0.25 A @ 0.25–12 V DC (millivolt); 360 VA transformer load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePhysical and installation\u003c\/b\u003e: 1\/2 inch conduit; overall dimensions 4-1\/8\"W x 2-3\/4\"D x 3-7\/8\"H; well spud 3\/4\" 14-threaded; insulation depth 1-1\/2\" to 4\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApprovals and environment\u003c\/b\u003e: UL and CSA approved; humidity 0–95% RH non-condensing; 200 psi well-mounted, 100 psi direct immersion.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBuilt for durability in demanding heating systems, this Aquastat Controller ensures safe, efficient performance and dependable boiler operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470920926,"sku":"110225","price":320.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378263_9176134e-a1c4-49bd-8c12-13e9b0d5d0f3.jpg?v=1765820724"},{"product_id":"resideo-honeywell-home-l4081a1023-aquastat-controller","title":"Resideo - Honeywell Home L4081A1023 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Controller from Resideo—Honeywell Home, model L4081A1023, is built for gas\/oil-fired hydronic heating systems. This immersion-type control delivers precise high and low temperature limits to protect boilers, minimize energy waste, and extend equipment life.\u003c\/p\u003e \u003cp\u003eKey specs and features include:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eType\u003c\/b\u003e: Horizontal immersion, multiple, high\/low limit\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature control\u003c\/b\u003e: High limit 130–240°F; Low limit 110–220°F; Differential 10°F fixed (high) and 10–25°F adjustable (low)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical ratings\u003c\/b\u003e: SPST contact; 8 A at 120 VAC \/ 5.1 A at 240 VAC (full load); 0.25 A at 0.25–12 VDC; 360 VA transformer load\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMounting \u0026amp; connections\u003c\/b\u003e: 1\/2\" conduit; Well spud size 3\/4\" 14-thread; Well-mounted (200 psi) and direct immersion (100 psi)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplication\u003c\/b\u003e: Gas\/oil fired hydronic heating systems; Humidity 0–95% RH non-condensing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions\u003c\/b\u003e: 4-1\/8\" W x 2-3\/4\" D x 3-7\/8\" H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals\u003c\/b\u003e: UL, CSA\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose this Aquastat Controller for dependable boiler protection and precise temperature control in modern heating setups.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605470986462,"sku":"2207","price":303.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378254_58c5a26f-8d66-4e25-966c-e4c5959b574e.jpg?v=1765812465"},{"product_id":"resideo-honeywell-home-r8182h1070-aquastat-controller","title":"Resideo - Honeywell Home R8182H1070 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe R8182H1070 Aquastat Controller from Resideo - Honeywell Home delivers precise temperature control for oil-fired and hydronic heating systems. Built with a durable junction box well immersion design, this aquastat ensures reliable sensing and smooth burner operation across a wide temperature range.\u003c\/p\u003e\n\u003cp\u003eDesigned for compatibility with standard oil boilers and hydronic loops, the R8182H1070 combines robust electrical ratings with adaptable control parameters. The adjustable high and low limits and a fixed differential offer stable boiler sequencing, while a compact footprint fits a variety of installations.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eTemperature ranges:\u003c\/b\u003e High limit 130–240°F; Low limit 110–220°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaximum temperature rating:\u003c\/b\u003e 250°F (element)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContact ratings:\u003c\/b\u003e 4.4A at 120V full load; 26.4A locked rotor (burner)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContact configuration:\u003c\/b\u003e SPST\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnection type:\u003c\/b\u003e 1\/2\" conduit\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Oil-fired and hydronic heating systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSafety features:\u003c\/b\u003e 45-second timing for safety switch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncluded accessories:\u003c\/b\u003e Stop dial; heat-conductive compound\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePhysical specifications:\u003c\/b\u003e 5-1\/4\"W x 3-7\/16\"D x 7-1\/8\"H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDifferential:\u003c\/b\u003e 10°F (fixed); 10–25°F (low limit\/circulator)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure and environment:\u003c\/b\u003e 200 PSI (immersion well); 100 PSI (direct immersion); 0–95% RH non-condensing; insulation depth 1-1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUL and CSA approvals ensure safe, dependable performance in both residential and commercial heating applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471019230,"sku":"2610","price":1083.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378415_53bb4882-4093-4a5e-94b2-138cbe275b74.jpg?v=1765813224"},{"product_id":"resideo-honeywell-home-l4080b1352-aquastat-controller","title":"Resideo - Honeywell Home L4080B1352 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eThe Resideo - Honeywell Home L4080B1352 Aquastat Controller is an essential high limit controller for efficient hydronic heating systems. This vertical well immersion aquastat ensures precise temperature control, maintaining optimal performance in your heating setup with a reliable high limit feature to prevent overheating.\u003c\/p\u003e \u003cp\u003eDesigned for durability and accuracy, this heating controller offers a wide temperature range from 100 to 200 degrees Fahrenheit, with a maximum rating up to 265 degrees Fahrenheit. It's perfect for hydronic heating applications, featuring a break-on-rise contact configuration and a differential temperature rating of 8 degrees Fahrenheit. The controller's robust build handles pressures up to 225 PSI and includes a siphon loop for seamless operation, making it a top choice for reliable temperature management in residential and commercial settings.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003ePrecise Temperature Control:\u003c\/b\u003e Covers a range of 100 to 200 degrees Fahrenheit with high limit protection up to 265 degrees Fahrenheit.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVersatile Compatibility:\u003c\/b\u003e Ideal for hydronic heating systems, with an immersion well depth of 1-1\/2 to 3 inches for easy installation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStrong Performance Ratings:\u003c\/b\u003e Handles 8 amps at 120V AC or 4 amps at 240V AC, ensuring safe and efficient operation under various conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCertifications and Safety:\u003c\/b\u003e UL and CSA approved, with a pressure rating of 225 PSI for dependable use in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompact Design:\u003c\/b\u003e Measures 2 inches wide, 2-1\/2 inches deep, and 3-7\/8 inches high, making it easy to integrate into existing systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade your heating system with the Resideo - Honeywell Home L4080B1352 Aquastat Controller for enhanced efficiency and peace of mind. Whether you're maintaining a home boiler or a larger setup, this device delivers consistent results to keep your space comfortable year-round.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471084766,"sku":"287824","price":85.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378253_1ea6fb7e-f429-4af7-950a-70f137ad4df0.jpg?v=1765822601"},{"product_id":"resideo-honeywell-home-r8182d1079-aquastat-controller","title":"Resideo - Honeywell Home R8182D1079 Aquastat Controller","description":"\u003cdiv\u003e\n\u003cp\u003eAquastat Controller for oil-fired and hydronic heating systems: the Resideo Honeywell Home R8182D1079 delivers precise boiler temperature control with a rugged vertical well immersion design. It supports a temperature range of 130 to 240 Deg F for high limit and 110 to 220 Deg F for low limit, with a maximum element rating of 250 Deg F.\u003c\/p\u003e \u003cp\u003eUL and CSA approved, this SPST contact controller is built for reliability in demanding environments. Featuring a 1\/2 Inch conduit connection and compact dimensions (5-1\/4\" W x 3-7\/16\" D x 7-1\/8\" H), it fits standard installations. Insulation depth is 1-1\/2\", helping reduce heat loss, and a 45-second safety timing aids secure operation. The package includes a stop dial and heat-conductive compound for quick setup and precise calibration.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eTemperature control range: high 130–240 Deg F; low 110–220 Deg F, suitable for oil-fired and hydronic heating applications.\u003c\/li\u003e \u003cli\u003eElectrical specs: 4.4 A at 120 V full load; 26.4 A locked rotor; 360 VA ignition; 0.2 A anticipator; 9 W power consumption.\u003c\/li\u003e \u003cli\u003eConnections and pressure: 1\/2\" conduit; maximum safe operating pressure 200 PSI (immersion well) and 100 PSI (direct immersion).\u003c\/li\u003e \u003cli\u003eVoltage and approvals: UL and CSA approved; SPST contact configuration.\u003c\/li\u003e \u003cli\u003eExtras: includes stop dial and heat-conductive compound for easy setup and accurate calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471215838,"sku":"2605","price":1057.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378414_f7ec6095-0ce2-4260-83af-d247dda62cb6.jpg?v=1765813219"},{"product_id":"resideo-honeywell-home-l8124c1003-aquastat-relay","title":"Resideo - Honeywell Home L8124C1003 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eL8124C1003 Aquastat Relay\u003c\/b\u003e from Resideo–Honeywell Home is a precision control device designed for reliable hydronic heating systems. With a direct horizontal immersion well and a sensing element measuring 3\/8 inch in diameter by 2-7\/8 inches in length, this triple, high-limit unit delivers robust protection and accurate temperature control.\u003c\/p\u003e\n\u003cp\u003eKey specs include SPST contact configuration, 1\/2 inch conduit connections with quick-connect or screw options, and UL\/CSA approvals for safe installation. Temperature ranges cover a high-limit of 130–240°F and a low-limit of 110–220°F, with a fixed high-limit differential of 10°F and an adjustable low-limit differential from 10 to 25°F to tailor performance to your system. Maximum temperature ratings are 150°F for the switch and 265°F for the sensing element.\u003c\/p\u003e\n\u003cp\u003eAdditional details include dimensions of 6-1\/8\" W x 3-1\/16\" D x 4-3\/8\" H, insulation depth of 1-1\/2\", and humidity tolerance from 0 to 95% RH non-condensing. Pressure ratings reach up to 200 PSI on the outside of the immersion well and 100 PSI if inserted directly as a capsule.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eSPST contact configuration\u003c\/li\u003e \u003cli\u003eDirect immersion well: 3\/8\" diameter x 2-7\/8\" length\u003c\/li\u003e \u003cli\u003e1\/2\" conduit connections; quick-connect or screw\u003c\/li\u003e \u003cli\u003eHigh-limit 130–240°F; Low-limit 110–220°F\u003c\/li\u003e \u003cli\u003eUL\/CSA approved\u003c\/li\u003e \u003cli\u003eCompact dimensions: 6-1\/8\" W × 3-1\/16\" D × 4-3\/8\" H\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471477982,"sku":"2247","price":364.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378268_668f390c-e15f-4325-b93f-edcdc81c270d.jpg?v=1765812542"},{"product_id":"resideo-honeywell-home-l8124l1011-aquastat-relay","title":"Resideo - Honeywell Home L8124L1011 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eAquastat Relay\u003c\/b\u003e from Resideo—Honeywell Home L8124L1011 delivers precise control for hydronic heating systems. Engineered for direct horizontal immersion in a sensing well, this robust unit combines high-limit safety with an adjustable low-limit to protect boilers and ensure efficient operation.\u003c\/p\u003e \u003cp\u003eKey specifications include a wide operating range and durable construction: high-limit 130–240°F, low-limit 110–220°F; maximums of 150°F (switch) and 265°F (sensing element). The SPST contact handles 7.4 A at 120V AC \/ 3.7 A at 240V AC full load (44.4 A at 120V \/ 22.2 A at 240V locked rotor). Connection is via 1\/2 inch conduit with quick-connect or screw terminals. Overall dimensions are 6-1\/8\" W x 3-1\/16\" D x 4-3\/8\" H. The unit is rated for 200 psi outside the immersion well and 100 psi if inserted directly as a capsule, and operates in 0–95% RH non-condensing environments. UL and CSA approvals ensure compliance with safety standards.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDirect horizontal immersion well for reliable sensing\u003c\/li\u003e \u003cli\u003eSensing element: Type 3\/8 inch diameter x 2-7\/8 inch length\u003c\/li\u003e \u003cli\u003eTriple high-limit protection with adjustable low-limit\u003c\/li\u003e \u003cli\u003eSPST contact configuration for simple on\/off control\u003c\/li\u003e \u003cli\u003e1\/2 inch conduit connections with quick-connect or screw terminals\u003c\/li\u003e \u003cli\u003eWide temperature ranges and robust electrical ratings\u003c\/li\u003e \u003cli\u003eUL and CSA approvals for safety and compliance\u003c\/li\u003e \u003cli\u003eCompact dimensions: 6-1\/8\" W x 3-1\/16\" D x 4-3\/8\" H\u003c\/li\u003e \u003cli\u003ePressure ratings: 200 psi (immersion well) \/ 100 psi (capsule)\u003c\/li\u003e \u003cli\u003eHumidity tolerance: 0–95% RH non-condensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471510750,"sku":"2251","price":384.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378271_ca1e39fa-7153-48c3-9ee0-47b1c5f69c6c.jpg?v=1765812558"},{"product_id":"resideo-honeywell-home-l8124g1020-aquastat-relay","title":"Resideo - Honeywell Home L8124G1020 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003eAquastat Relay L8124G1020 from Resideo delivers reliable boiler control for hydronic heating systems. This UL-listed, CSA-approved aquastat features a direct vertical immersion well and a SPST contact configuration for dependable operation in demanding environments.\u003c\/p\u003e\n\u003cp\u003eThe sensing element measures 3\/8 inch diameter by 2-7\/8 inches long, with a fixed high limit and an adjustable low limit to tailor protection for your boiler. Temperature ranges cover 130–240°F for high limit and 110–220°F for low limit, while the switch rating reaches up to 7.4A at 120V AC and 3.7A at 240V AC. The device tolerates up to 265°F on the sensing element and 150°F on the switch, ensuring robust performance across seasonal swings.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDirect vertical immersion well\u003c\/b\u003e for quick, accurate sensing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSPST contact\u003c\/b\u003e with reliable current ratings\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eUL and CSA approved\u003c\/b\u003e for safety compliance\u003c\/li\u003e \u003cli\u003eConduit connections: 1\/2 inch, with quick connect or screw terminals\u003c\/li\u003e \u003cli\u003eCompact dimensions: 4-3\/8 in W x 3-1\/16 in D x 6-1\/8 in H\u003c\/li\u003e \u003cli\u003eFixed high limit differential of 10°F; adjustable low limit 10–25°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for hydronic heating systems, this versatile aquastat integrates seamlessly with standard components to protect boilers and maintain comfortable, energy-efficient temperatures.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471609054,"sku":"2250","price":391.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378270_f06308b5-3b67-4ae5-9f01-466dec156380.jpg?v=1765812553"},{"product_id":"resideo-honeywell-home-l8124a1015-aquastat-relay","title":"Resideo - Honeywell Home L8124A1015 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003eL8124A1015 Aquastat Relay by Resideo, a Honeywell Home product, delivers precise temperature control for hydronic heating systems. Designed for direct vertical well immersion, it uses a 3\/8\" diameter x 2-7\/8\" length sensing element and supports triple high\/low limit control to protect boilers and circulators. This rugged unit blends reliable sensing with easy installation for modern radiant and baseboard setups.\u003c\/p\u003e \u003cp\u003eWith flexible settings and durable construction, the L8124A1015 is UL\/CSA approved and supports standard conduit connections with quick-connect or screw terminals. It is ideal for residential and light commercial hydronic heat, delivering dependable performance in challenging environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSensing element:\u003c\/b\u003e 3\/8\" Ø x 2-7\/8\" vertical well\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature ranges:\u003c\/b\u003e High 130–240°F; Low 110–220°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMax ratings:\u003c\/b\u003e Switch 150°F; Sensing element 265°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContacts:\u003c\/b\u003e SPST\/SPDT; 7.4A @120V; 3.7A @240V\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLoad:\u003c\/b\u003e 44.4A @120V; 22.2A @240V locked rotor\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnection:\u003c\/b\u003e 1\/2\" conduit; quick-connect or screw\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Hydronic heating systems (boilers, circulators)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApprovals:\u003c\/b\u003e UL, CSA\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 4-3\/8\"W x 3-1\/16\"D x 6-1\/8\"H\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnvironment:\u003c\/b\u003e 0–95% RH non-condensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471641822,"sku":"2244","price":364.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378267_21c51c22-5ad4-4574-a7f6-82f23898e040.jpg?v=1765812537"},{"product_id":"resideo-honeywell-home-l8148j1009-aquastat-relay","title":"Resideo - Honeywell Home L8148J1009 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003eAquastat Relay L8148J1009 from Resideo\/Honeywell Home is a reliable control for boilers and hydronic systems. This high‑limit relay combines precise capillary sensing with durable electrical specs to safeguard your equipment, with a 140 to 240°F temperature range and a 24V control option.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eType 4-1\/2 inch capillary, horizontal or vertical well immersion for flexible installation\u003c\/li\u003e \u003cli\u003eHigh limit protection with 140–240°F operating range; maximum 150°F with 1.2A at 24V, 77°F with 1.4A at 24V load\u003c\/li\u003e \u003cli\u003eContact configuration SPST; robust ratings: 7.4A@120V AC, 3.7A@240V AC full load; 44.4A@120V AC\/22.2A@240V AC locked rotor\u003c\/li\u003e \u003cli\u003eLow and micro-amp options: 0.8A@24V AC, 0.25A at 1\/4–12V DC, 0.2A at anticipator setting\u003c\/li\u003e \u003cli\u003eIndustrial approvals: UL and CSA; 1\/2 inch conduit or quick connect\/screw connections\u003c\/li\u003e \u003cli\u003eCompact dimensions and installation options: 4‑5\/16 in W x 3‑1\/8 in D x 6‑1\/8 in H (Horizontal) or 6‑1\/8 in W x 3‑1\/8 in D x 4‑5\/16 in H (Vertical)\u003c\/li\u003e \u003cli\u003eOther specs: differential temperature 8°F, max safe operating pressure 255 PSI, humidity 0–95% RH non-condensing; includes heat conductive compound\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cb\u003ePerfect for circulator motors and burners\u003c\/b\u003e, this Aquastat Relay from Honeywell Home delivers dependable control and long-term durability for heating systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605471740126,"sku":"2254","price":333.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378276_c0c9859b-9a72-4bed-b0c3-c63219694acc.jpg?v=1765812574"},{"product_id":"resideo-honeywell-home-l8148a1017-aquastat-relay","title":"Resideo - Honeywell Home L8148A1017 Aquastat Relay","description":"Aquastat Relay 140-240F Line Volt. Burner Circuit Cold Start Control            ","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472067806,"sku":"2252","price":271.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378272_adb9c64c-b093-4b25-a6ec-48d97f7a363f.jpg?v=1765812567"},{"product_id":"resideo-honeywell-home-l8148e1265-aquastat-relay","title":"Resideo - Honeywell Home L8148E1265 Aquastat Relay","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eL8148E1265 Aquastat Relay\u003c\/b\u003e from Resideo\/Honeywell Home delivers reliable high-limit protection and precise immersion sensing for boilers and burners. This \u003cb\u003eL8148E1265 Aquastat Relay\u003c\/b\u003e uses a 4-1\/2 inch capillary with vertical well immersion to provide accurate temperature control, rugged construction, and easy installation in demanding HVAC environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType and immersion:\u003c\/b\u003e 4-1\/2 inch capillary with high-limit, vertical well immersion\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range:\u003c\/b\u003e 140°F to 240°F (high-limit); \u003cb\u003eMaximum temperature rating\u003c\/b\u003e 150°F at 1.2A @ 24V and 77°F at 1.4A @ 24V (load)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eContact configuration and ratings:\u003c\/b\u003e SPST; full-load 7.4A @120V AC \/ 3.7A @240V AC; \u003cbr\u003elocked rotor 44.4A @120V AC \/ 22.2A @240V AC (burner\/circulator); 0.8A @24V AC; 0.25A @1\/4–12V DC; 0.2A anticipator\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnection:\u003c\/b\u003e 1\/2 inch conduit; quick-connect or screw terminals\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications and approvals:\u003c\/b\u003e Circulator motor, burner; UL and CSA approved\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDimensions and specs:\u003c\/b\u003e 4-5\/16\" W × 3-1\/8\" D × 6-1\/8\" H; differential 15°F; max 255 PSI; humidity 0–95% RH non-condensing; insulation depth 1-1\/2\"–3\"\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncludes:\u003c\/b\u003e 50 Volt Amp transformer, Molex plug, heat-conductive compound\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUL\/CSA-listed and designed for dependable burner and circulator performance, this aquastat relays precise control with durable construction and straightforward installation for your heating system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472100574,"sku":"2253","price":363.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378274_f73fd85f-5ecb-4fb7-9388-b9e93378feb2.jpg?v=1765812569"},{"product_id":"resideo-honeywell-home-121371a-aquastat-sensor-well-assembly","title":"Resideo - Honeywell Home 121371A Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eResideo - Honeywell Home 121371A Aquastat Sensor Well Assembly delivers precise immersion sensing for boiler controls.\u003c\/p\u003e\n\u003cp\u003eThis immersion, capillary type sensor well provides durable copper construction and a secure 1\/2 inch threaded connection for reliable installation.\u003c\/p\u003e\n\u003cp\u003eKey specifications include a bulb size of 3\/8 inch diameter by 3 inches in length, insulation depth of 1-1\/2 inches, capillary diameter 5\/64 inch, and a pressure rating of 255 PSI at 300°F. The assembly includes a mounting clamp for fast, stable mounting in tight equipment spaces.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eImmersion sensor well\u003c\/b\u003e for accurate boiler temperature sensing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCapillary design\u003c\/b\u003e allows flexible placement and routing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCopper body\u003c\/b\u003e for lasting durability and corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e1\/2\" threaded connection\u003c\/b\u003e ensures broad compatibility with standard fittings\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInsulation depth 1-1\/2\"\u003c\/b\u003e helps minimize heat loss\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCapillary diameter 5\/64\"\u003c\/b\u003e supports compact installations\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e255 PSI @ 300°F\u003c\/b\u003e rating for demanding boiler environments\u003c\/li\u003e \u003cli\u003eIncludes a \u003cb\u003emounting clamp\u003c\/b\u003e for secure, straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472198878,"sku":"1746","price":43.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00377684_8b1b9636-50b2-4f41-bdc2-177944d68e87.jpg?v=1765811129"},{"product_id":"resideo-honeywell-home-121371l-aquastat-sensor-well-assembly","title":"Resideo - Honeywell Home 121371L Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Sensor Well Assembly 121371L delivers precise immersion sensing for boiler control systems. Designed as an immersion type with a capillary sensor, it provides accurate temperature readings in challenging conditions.\u003c\/p\u003e \u003cp\u003eBuilt for durability, this copper sensor well features a 3\/8 inch diameter x 3 inch length bulb, a 1\/2 inch threaded connection, and a 3 inch insulation depth. The capillary diameter is 5\/64 inch, and the assembly is rated for 255 PSI at 300°F, ensuring dependable performance in high-temperature boiler environments. Includes mounting clamp 121371.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eImmersion Type\u003c\/b\u003e sensor well for direct boiler immersion\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCapillary\u003c\/b\u003e sensor with 5\/64\" diameter capillary\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e copper construction for durability\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBulb Size\u003c\/b\u003e 3\/8\" diameter x 3\" length\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThreaded Connection\u003c\/b\u003e 1\/2\" threaded fitting for easy installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInsulation\u003c\/b\u003e depth 3\" reduces heat loss\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure\/Temp Rating\u003c\/b\u003e 255 PSI at 300°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIncludes\u003c\/b\u003e mounting clamp 121371\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472231646,"sku":"1751","price":57.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00377686_0d7e7da3-9ece-4c67-82fe-829cb664e7f9.jpg?v=1765811148"},{"product_id":"resideo-honeywell-home-121371b-aquastat-sensor-well-assembly","title":"Resideo - Honeywell Home 121371B Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Sensor Well Assembly 121371B from Resideo (Honeywell Home) delivers precise immersion and capillary sensing for boiler and hydronic heating systems. Designed for durable copper construction, this sensor well ensures accurate temperature readings in demanding environments.\u003c\/p\u003e \u003cp\u003eWith a 3\/4 inch threaded connection, 3\/8 inch bulb, and a 1-1\/2 inch insulation depth, it fits a wide range of aquastats and provides robust performance in high-temperature applications. The copper body delivers excellent thermal conductivity and corrosion resistance, while the compact form simplifies installation and maintenance.\u003c\/p\u003e \u003cp\u003eDesigned for reliability in residential and commercial systems, the 121371B includes a mounting clamp for secure attachment and ease of service.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eType: Immersion and Capillary configuration for accurate sensing in boiler and hydronic circuits.\u003c\/li\u003e \u003cli\u003eBulb size: 3\/8\" diameter x 3\" length for responsive readings.\u003c\/li\u003e \u003cli\u003eThread: 3\/4\" threaded connection for broad compatibility with standard aquastats.\u003c\/li\u003e \u003cli\u003eMaterial: Copper construction provides durability and excellent heat transfer.\u003c\/li\u003e \u003cli\u003eInsulation depth: 1-1\/2\" insulation minimizes heat loss and stabilizes readings.\u003c\/li\u003e \u003cli\u003eCapillary diameter: 5\/64\" preserves signal integrity under temperature shifts.\u003c\/li\u003e \u003cli\u003ePressure rating: 255 PSI at 300°F for high-temperature reliability.\u003c\/li\u003e \u003cli\u003eIncludes: 121371 mounting clamp for secure, quick installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472264414,"sku":"1748","price":49.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00377685_a30d042c-23c3-41d5-a18f-2c6d97f9365c.jpg?v=1765811133"},{"product_id":"resideo-honeywell-home-121371m-aquastat-sensor-well-assembly","title":"Resideo - Honeywell Home 121371M Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eAquastat Sensor Well Assembly delivers precise immersion sensing for boiler and hot-water systems. The 121371M model uses an immersion-type design with a capillary sensor and a copper well for durability and fast temperature response.\u003c\/p\u003e \u003cp\u003eKey specifications include a 3\/8 inch bulb diameter by 3 inch length, a 3\/4 inch threaded connection, 3 inch insulation depth, and a capillary diameter of 5\/64 inch. The assembly is rated for up to 255 PSI at 300°F, making it suitable for demanding commercial and residential applications. Includes the 121371 mounting clamp for secure, easy installation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eImmersion-type aquastat sensor well\u003c\/li\u003e \u003cli\u003eCapillary sensor with 5\/64 inch diameter\u003c\/li\u003e \u003cli\u003eBulb size 3\/8 inch diameter x 3 inches\u003c\/li\u003e \u003cli\u003eThreaded connection: 3\/4 inch\u003c\/li\u003e \u003cli\u003eCopper construction for durability and quick response\u003c\/li\u003e \u003cli\u003eInsulation depth: 3 inches\u003c\/li\u003e \u003cli\u003ePressure rating: 255 PSI at 300°F\u003c\/li\u003e \u003cli\u003eIncludes mounting clamp 121371\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472329950,"sku":"1752","price":65.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00377687_5c63e825-c684-4e5c-b517-a0efe316d178.jpg?v=1765811157"},{"product_id":"resideo-honeywell-home-123870a-aquastat-sensor-well-assembly","title":"Resideo - Honeywell Home 123870A Aquastat Sensor Well Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eThe Aquastat Sensor Well Assembly (123870A) delivers reliable immersion sensing for HVAC and hot-water systems. Built from copper with a robust 3\/4 inch threaded connection, it installs quickly and seals firmly. The immersion-type sensor well accommodates a 3\/8 inch diameter bulb and a 3 inch length, matching standard immersion sensing probes for precise temperature monitoring. With an insulation depth of 1-1\/2 inches, it helps minimize heat loss and protects sensor readings in demanding installations. Rated to 255 PSI at 300°F, this sensor well stands up to high-temperature, high-pressure environments common in boiler rooms.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Immersion sensor well\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBulb size:\u003c\/b\u003e 3\/8 in diameter x 3 in length\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e 3\/4 in threaded\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Copper\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInsulation depth:\u003c\/b\u003e 1-1\/2 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure rating:\u003c\/b\u003e 255 PSI at 300°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605472559326,"sku":"1770","price":49.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00377690_528c56b3-a1ab-49c1-aa5c-bb70295c3712.jpg?v=1765811212"},{"product_id":"resideo-honeywell-home-w8735s3000-oil-electronic-aquastat-controller-alarm-module","title":"Resideo - Honeywell Home W8735S3000 Oil Electronic Aquastat Controller Alarm Module","description":"\u003cdiv\u003e\n\u003cp\u003eOil Electronic Aquastat Controller Alarm Module, the Resideo - Honeywell Home W8735S3000, is an essential alarm module for oil boiler control. This unit is used on the L7224U Oil Electronic Aquastat Controller to monitor and respond to boiler conditions with reliable performance. Designed for compact installation, it fits tight spaces while delivering clear alarms and dependable operation in demanding environments.\u003c\/p\u003e \u003cp\u003eKey specifications and compatibility help you choose with confidence:\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eOverall dimensions: 3.385\" W x 0.92\" D x 2.41\" H\u003c\/li\u003e\n\u003cli\u003eVoltage rating: 18–30 VAC\u003c\/li\u003e\n\u003cli\u003eFrequency: 60 Hz\u003c\/li\u003e\n\u003cli\u003eTemperature range: -30 to 150°F\u003c\/li\u003e\n\u003cli\u003eHumidity tolerance: 0–95% RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003eSwitching action: On\/Off\u003c\/li\u003e\n\u003cli\u003eMounting: Wall mount\u003c\/li\u003e\n\u003cli\u003eTerminal type: Screw\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for oil boiler control environments, this alarm module offers quick diagnostics and straightforward integration with compatible Honeywell controls. Its form factor supports wall-mount installation using simple screw terminals, while its wide voltage range and rugged temperature\/humidity tolerance ensure reliable performance in varying conditions.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eSecondary keywords:\u003c\/b\u003e oil boiler control, L7224U compatibility, wall-mount installation, screw terminals, alarm module.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605516435678,"sku":"210306","price":54.61,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00378976_eeeabbd3-8648-407f-9f17-ed6da02edcd5.jpg?v=1765821249"}],"url":"https:\/\/newenglandsupplyhouse.com\/collections\/boiler-aquastats.oembed","provider":"New England Supply House","version":"1.0","type":"link"}