773-156

This premium air pressure switch is a vital safety component designed for high-efficiency gas furnaces and HVAC heating systems. Often referred to as an air proving switch, this part monitors the differential pressure created by the draft inducer motor to ensure that combustion gases are being safely and effectively vented before the ignition sequence begins. If your furnace inducer motor is running but the heating cycle won't initiate, a failing or clogged pressure switch is a common culprit. This replacement sensor provides reliable performance, ensuring your residential heating system operates within precise safety parameters by detecting airflow obstructions or venting failures. Engineered for durability, it is an essential part for maintaining the safety and efficiency of forced-air heating equipment.
Type: Air Pressure Switch
Size: Small
Application: Used in residential gas furnaces, forced-air heating systems, and HVAC units to verify proper venting and inducer motor operation.
Specifications: 0.25" WC (Water Column) set point, single-pole configuration, vacuum-actuated air proving sensor.