773-381

This high-performance dual air pressure switch is a vital safety component designed for residential gas furnaces and HVAC systems. Often referred to as an air proving switch, this part monitors the pressure differential created by the draft inducer motor to ensure proper venting and airflow. By verifying that the exhaust system is clear and the motor is functioning correctly, it allows the ignition sequence to proceed safely. This switch features dual set points to provide precise monitoring of the furnace's internal environment, making it an essential replacement part for resolving common furnace ignition failures or pressure switch error codes. Engineered for durability and accuracy, it helps maintain the efficiency and safety of your heating equipment.
Type: Air Pressure Switch
Size: Standard HVAC pressure switch
Application: High-efficiency gas furnaces, HVAC heating systems, and draft inducer motor assemblies.
Specifications: Dual-stage configuration with set points of 1.60" WC (Water Column) and 0.40" WC; safety-critical air proving function.