773-086

This premium two-stage air pressure switch is a critical safety component designed for high-efficiency residential gas furnaces. As an essential air-proving sensor, it monitors the negative pressure generated by the draft inducer motor to ensure the exhaust system is venting correctly before allowing the ignition sequence to begin. Featuring dual-stage calibration, this switch is engineered to detect precise vacuum levels, protecting your HVAC system from operating under unsafe airflow conditions. If your furnace is experiencing ignition failures or displaying pressure-related fault codes, this high-quality replacement switch is vital for restoring reliable and efficient heating performance.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Residential gas furnaces and two-stage HVAC heating systems where air proving is required for safe ignition.
Specifications: Two-stage operation; factory calibrated at -0.30" WC and -1.37" WC setpoints; dual-port vacuum connection; standard electrical spade terminals.