773-021

Ensure your heating system operates safely and efficiently with this premium Air Pressure Switch. Designed as a critical safety component for gas furnaces and HVAC units, this air proving switch monitors the pressure generated by the draft inducer motor. It confirms that the system is properly venting combustion gases before allowing the ignition process to begin, preventing hazardous operation. If your furnace is experiencing ignition failure, frequent cycling, or pressure-related error codes, this 0.46" WC rated switch is an essential replacement part to restore reliable heating performance. Engineered for precise calibration and long-lasting durability, it serves as a vital safeguard for residential and commercial forced-air heating systems.
Type: Air Pressure Switch
Size: Standard
Application: Gas furnaces, HVAC heating systems, and draft inducer motor assemblies.
Specifications: Pressure Setting: 0.46" WC (Water Column); Function: Air Proving / Safety Interlock; Application: Negative Pressure Sensing