773-377

This premium YORK/ETC Air Pressure Switch is an essential safety component for residential and commercial heating systems. Designed as an air-proving switch, it monitors the pressure differential created by the inducer blower to ensure that combustion gases are being safely exhausted from the furnace. Featuring a precise 1.30" WC (Water Column) activation point and a versatile three-terminal design, this switch prevents the ignition cycle from proceeding if proper airflow isn't detected. Replacing a faulty or failing pressure switch is a common solution for furnaces that won't ignite or shut down prematurely. This high-quality replacement part helps maintain the efficiency and safety of your HVAC equipment, ensuring reliable performance during the heating season.
Type: Air Pressure Switch
Size: Standard HVAC component
Application: Used in forced-air furnaces and HVAC heating units to monitor inducer motor pressure and ensure safe venting of exhaust gases.
Specifications: Pressure Set Point: 1.30" WC (Water Column); Terminal Count: 3 Terminals; Function: Air Proving and Safety Interlock