773-162

This high-quality furnace air pressure switch is an essential safety component designed for heating systems. Functioning as an air proving switch, it monitors the negative pressure generated by the draft inducer motor to ensure proper venting and airflow before allowing the furnace to ignite. Rated at 0.47" WC (Water Column), this switch is critical for detecting potential hazards such as blocked flues or inducer motor failures. Replacing a faulty pressure switch can resolve common HVAC issues like ignition failure or frequent system cycling, ensuring your residential gas furnace operates safely and efficiently during the heating season.
Type: Air Pressure Switch
Size: Small
Application: Used in residential and commercial gas furnaces and HVAC units to prove inducer motor operation and vent integrity.
Specifications: Pressure Setting: 0.47" WC (Water Column); Function: Normally Open, closes on pressure rise.