If your current module is the 42001-0052S (often manufactured by Fenwal for Pentair)

Common Questions Is the Lennox 65G58 compatible with R-410A systems

The 325-3L47 series comes with an integral vent limiting orifice (OPD 47) which often eliminates the need for separate vent piping to the outdoors

The Heil Quaker ICP 1171734 Circuit Board is an OEM furnace fan control board designed for high-reliability operation in International Comfort Products (ICP) equipment

this unit provides a specific outlet pressure range suitable for large-scale boiler feeds and commercial furnaces

Lochinvar & A.O. Smith 100109954 Pressure Switch 321894-706 If your current module isWhen you're out in the field and a BTI or BTN series water heater starts acting up, the Lochinvar & A. O. Smith 100109954 Pressure Switch is likely the component you need to check. This genuine OEM pressure switch kit is engineered for a precise 1. 95" WC (Water Column) set point, ensuring the inducer is pulling the correct draft before allowing the ignition sequence to proceed. As a normally open k switch air pressure sensor, it provides critical