Resideo - Honeywell Home 123871A Aquastat Sensor Well AssemblyThe Aquastat Sensor Well Assembly from Resideo Honeywell Home 123871A delivers reliable immersion type temperature sensing for boiler and hydronic systems. This copper sensor well features a 3 8 inch bulb, a 3 inch length, and a 3 4 inch threaded connection, providing precise readings in demanding environments and compatibility with standard immersion probes. Constructed from copper with an insulation depth of 3 inches, this assembly minimizes heat

This inducer motor is built to meet OEM specifications

Temperature Rating: 32–125°F

and proven purge sequences (LHL-LF and HF) to ensure safe

Thread size: 3/4 inch threaded connection

offering a snug fit and smooth operation

4 A @ 120 V / 22

Applications: 99FRD/100CRD/102CRD Oil Burner

The unit is designed for steam

It acts as a reliable furnace control module

Engineered for easy installation in standard HVAC assemblies

Type: Deck Limit Switch

replacement boiler controls