773-379

This high-quality air pressure switch is a critical safety component for residential gas furnaces and HVAC systems. Often referred to as an air proving switch or draft inducer switch, its primary function is to monitor the pressure differential created by the inducer motor. By ensuring that the combustion blower is generating sufficient airflow to safely vent flue gases, this switch prevents the furnace from igniting under unsafe conditions. If your heating system is failing to start, cycling improperly, or displaying a pressure switch lockout error, this replacement part is essential for restoring safe and efficient operation. It is designed to meet rigorous performance standards for reliability in demanding heating environments.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Used in residential gas furnaces and HVAC heating units to monitor inducer motor draft and ensure proper venting of combustion gases.
Specifications: Dual pressure set points of 1.20" WC and 0.40" WC; designed for air proving and safety circuit integration.