773-336

This high-quality single-port air pressure switch is a critical safety component designed for residential and commercial heating systems. Engineered to monitor the draft inducer motor, this air proving switch ensures that proper venting and airflow are established before the ignition sequence begins. With a precise 1.15" WC (Water Column) set point, it protects your furnace or unit heater from hazardous operating conditions such as exhaust blockages or mechanical failure. If your HVAC system is failing to ignite or displaying pressure-related error codes, this replacement pressure switch offers a reliable fix to restore efficient and safe heating performance. It is built for long-term durability and precision in gas-fired heating applications.
Type: Air Pressure Switch
Size: Compact
Application: Used in gas-fired unit heaters, furnaces, and HVAC equipment to verify draft inducer operation and ensure safe combustion cycles.
Specifications: 1.15" WC Set Point, Single Port Design, Air Proving Safety Function