773-036

This premium two-stage air pressure switch is a vital safety component for high-efficiency gas furnaces. Engineered to monitor the draft created by the inducer blower motor, this air proving switch ensures that combustion gases are being safely and effectively vented out of the heat exchanger before allowing the furnace to ignite. Specifically designed for two-stage heating systems, it features dual set points to handle varying airflow requirements between low-fire and high-fire operation. If your HVAC system is experiencing ignition failure or pressure switch lockout codes, this replacement pressure switch provides the reliable sensing needed to restore peak performance and ensure the safe operation of your home heating equipment.
Type: Air Pressure Switch
Size: Compact
Application: Used in residential and light commercial two-stage gas furnaces to verify proper venting pressure and draft inducer operation during the heating cycle.
Specifications: Two-stage sensing; Low stage set point: -0.30" WC; High stage set point: -0.68" WC; Diaphragm-actuated safety mechanism.