773-075

This premium two-stage air pressure switch is a critical safety sensor designed for high-efficiency gas furnaces. As an essential air-proving component, it monitors the vacuum pressure generated by the draft inducer blower to confirm the exhaust flue is clear and safe for combustion. It is specifically engineered for dual-stage heating systems, featuring dual setpoints to regulate both low-heat and high-heat modes. Replacing a faulty pressure switch can resolve common furnace ignition issues, startup error codes, and heating failures, restoring the reliability and safety of your home's HVAC system.
Type: Air Pressure Switch
Size: Standard
Application: Designed for use in two-stage residential gas furnaces and HVAC heating systems to monitor air pressure and ensure proper venting during the ignition cycle.
Specifications: Dual-stage operation; Pressure Setpoints: -0.15" WC and -0.40" WC; Air proving safety functionality.