Resideo - Honeywell Home L4006B1007 Aquastat Controller

The 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.

Operating 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.

• Direct immersion: Horizontal or vertical well mounting for flexible installation.
• Robust electricals: SPST contact; 8A at 120V AC; 5.1A at 240V AC (full load); 48A at 120V / 30.6A at 240V (locked rotor); millivolt capability.
• Solid construction: 3/4 inch conduit connection with screw terminals; compact enclosure 2" W x 2-1/8" D x 5-5/8" H.
• Sensing & fluid: Bulb filled with toluene or silicone oil; includes 1/2 inch well (123869A).
• Applications & approvals: Ideal for boilers and storage tanks; UL, CSA, AGA approved.