Resideo - Honeywell Home L4006E1067 Aquastat Controller

The Aquastat Controller, model L4006E1067 from Resideo - Honeywell Home, delivers precise boiler temperature control for reliable operation.

As 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.

Approved 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.

• Primary sensing: 3/8" copper bulb, 2-7/8" length; 3" capillary; direct immersion (horizontal or vertical); sensing liquid: toluene or silicone oil
• Temp range: 130–270°F; maximum temp rating 150°F
• Electrical 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
• Contact: SPST with break on temperature rise
• Connections: 3/4" conduit; screw terminal
• Applications: boiler and storage tank systems
• Approvals: UL, CSA, AGA
• Dimensions & pressure: 2" W x 2-1/8" D x 5-5/8" H; capillary 200 PSI; immersion well 255 PSI
• Included: factory stop at 250°F; heat-conductive compound; well adapter