773-094

This premium two-stage furnace pressure switch is an essential safety component for modern high-efficiency gas furnaces. Functioning as a high-precision air-proving switch, it monitors the negative pressure generated by the draft inducer motor to ensure the exhaust system is venting properly before ignition occurs. Designed specifically for dual-stage heating systems, this switch features dual setpoints of -0.10" WC and -0.97" WC to accommodate both low and high-heat cycles. Replacing a faulty pressure switch can resolve common HVAC issues like furnace ignition failure, intermittent heating cycles, and diagnostic error codes related to airflow or venting obstructions. Built for reliability and accurate sensing, this part ensures your residential heating system operates safely and efficiently.
Type: Air Pressure Switch
Size: Standard HVAC residential size
Application: Designed for use in two-stage gas furnaces and high-efficiency residential heating systems to verify inducer motor performance and vent safety.
Specifications: Two-stage operation; Low-stage setpoint: -0.10" WC (Water Column); High-stage setpoint: -0.97" WC; Air-proving functionality for combustion safety.