Complete Hardware Kit: Includes multiple sizes of ceramic bushings and insulators to accommodate various mounting plate depths

you protect the heat exchanger and burner components from premature wear caused by gas leaks or inconsistent pressure

Standardized Porting: Features a 1/4-inch barbed inlet to ensure a secure fit with existing furnace vacuum lines

Can I bypass the 971-0370-29 if the compressor is running hot

Can I use this thermostat on a millivolt fireplace system

Lochinvar & A.O. Smith 100113144 Switch 321894-708 Complete Hardware Kit: Includes multipleThe Lochinvar & A. O. Smith 100113144 Blower Prover Switch is a critical safety component designed for high efficiency water heaters and commercial boilers. As a direct OEM replacement for NS2 1333 01, this pressure switch (often referred to as an air pressure switch or draft prover switch) monitors the differential pressure created by the inducer motor. By verifying stable airflow, it ensures the sequence of operation proceeds to ignition safely.