773-017

This dual port air pressure switch is a vital safety and performance component for residential gas furnaces and high-efficiency heating systems. Functioning as an air proving switch, it monitors the vacuum pressure created by the inducer motor to ensure proper venting of combustion gases before allowing the ignition sequence to proceed. If your furnace is experiencing startup failures, frequent cycling, or error codes related to airflow, this replacement pressure switch is essential for restoring reliable operation. Designed for precision and durability, it features a dual-port configuration and a factory-calibrated set point to maintain the high safety standards of your HVAC equipment.
Type: Furnace Air Pressure Switch
Size: Standard
Application: Forced-air gas furnaces, high-efficiency heating units, and HVAC air proving systems.
Specifications: Set Point: -0.85" WC (Water Column); Configuration: Dual Port; Function: Safety airflow monitoring and vacuum sensing.