or differential air pressure

High Pressure Rating: Rated for up to 680 PSIG

When troubleshooting a furnace that fails to fire despite receiving line voltage at the ignitor harness

optimized for powering controllers

Always verify the probe length against the manifold clearance to ensure proper seating within the water column

Reznor 197028 Pressure Switch Els PW 17895 or differential air pressureThe Reznor 197028 Pressure Switch is a critical safety component designed for precise draft monitoring in high output unit heaters. Engineered as a genuine OEM replacement part, this high altitude pressure switch features a factory calibrated . 65" WC set point and a Single Pole Single Throw (SPST) configuration. It is specifically utilized in Reznor UDX, UDZ, UBX, and UBZ series heaters (size 125) for installations above 6,000 feet, as well as