773-159

This high-performance air pressure switch is a critical safety component designed for high-efficiency forced-air furnaces and heating systems. Specifically calibrated to a 1.61" WC (Water Column) set point, this air proving switch ensures that the inducer blower motor is creating the proper draft for safe combustion. If your furnace is failing to ignite or displaying common pressure switch error codes, this reliable replacement part monitors airflow to allow for safe ignition sequences. Built for durability and precise pressure sensing, it helps prevent the heating system from operating under obstructed venting or unsafe exhaust conditions, making it an essential component for routine HVAC maintenance and repair.
Type: Air Pressure Switch
Size: Compact
Application: Gas-fired furnaces, residential heating systems, and HVAC inducer motor air-proving applications.
Specifications: Pressure Set Point: 1.61" WC (Water Column), Switch Type: Air Proving / Safety Interlock