773-368

This premium air pressure switch is a vital safety component designed for high-efficiency furnaces and HVAC systems. Acting as an air proving switch, it monitors the pressure differential created by the draft inducer motor to ensure that combustion gases are being safely and effectively vented out of the heat exchanger. With a precision-calibrated 0.53" WC (Water Column) set point and a reliable two-port design, this sensor prevents the heating cycle from proceeding if a venting obstruction or motor failure is detected. It is an essential replacement part for restoring furnace functionality when encountering common pressure switch trip errors or ignition failure issues. Engineered for durability and high performance, this switch ensures your heating system operates at peak safety and efficiency throughout the winter months.
Type: Air Pressure Switch
Size: Compact Standard
Application: Used in forced-air furnaces and residential heating systems to monitor draft inducer airflow and ensure proper venting of combustion exhaust.
Specifications: Pressure Setting: 0.53" WC; Port Configuration: Dual Port (Two Ports); Function: Air Proving/Safety Interlock