773-288

This two-stage furnace air pressure switch is a critical safety component designed for high-efficiency gas heating systems. As a dual-stage air proving switch, it monitors the vacuum pressure generated by the draft inducer motor to ensure that combustion gases are being safely and effectively vented through the flue. If your furnace fails to ignite or shuts down unexpectedly, a malfunctioning pressure switch may be the culprit. This part features precise calibrated set points for both low and high-fire stages, ensuring your HVAC system operates within safe parameters. It is an essential replacement part for maintaining the reliability and safety of residential gas furnaces requiring a two-stage sensing mechanism.
Type: Air Pressure Switch
Size: Small
Application: Two-stage gas furnaces and residential HVAC heating systems
Specifications: Two-stage operation; Set points: -0.60" WC / -0.70" WC; Air proving safety sensor