773-050

This high-performance two-stage air pressure switch is a critical safety component designed for modern high-efficiency gas furnaces. As a vital air proving switch, it monitors the differential pressure generated by the draft inducer motor to ensure proper venting of combustion gases before ignition occurs. Featuring dual setpoints at 1.60" WC and 0.71" WC, this switch is specifically engineered to support multi-stage heating cycles, ensuring optimal performance in both low-fire and high-fire modes. If your heating system is experiencing ignition failure or intermittent shut-offs, replacing a faulty pressure switch is essential for restoring reliable furnace operation and ensuring home safety. This durable sensor helps maintain the efficiency of your HVAC system while preventing the buildup of harmful exhaust gases.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: High-efficiency two-stage gas furnaces and forced-air heating systems requiring air proving safety verification.
Specifications: Dual-stage operation; High-fire trip point: 1.60" WC; Low-fire trip point: 0.71" WC; Normally open contacts; Air proving functionality.