773-197

This premium Lennox/Aire-Flo air pressure switch is a critical safety component designed for high-efficiency gas furnaces. As an essential air proving switch, its primary function is to monitor the pressure generated by the inducer motor, ensuring that combustion gases are being safely and effectively vented out of the system. With a factory-calibrated set point of 1.41" WC (Water Column), this sensor prevents the furnace from igniting if it detects insufficient airflow or a blockage in the flue. If your heating system is experiencing ignition failure or venting errors, this durable replacement pressure switch helps restore reliable operation and ensures your HVAC unit meets safety standards. Engineered for precision and longevity, it is a key component for maintaining the efficiency and safety of residential heating units.
Type: Air Pressure Switch
Size: Compact
Application: Used in residential gas furnaces and HVAC heating systems to monitor inducer motor pressure and ensure proper venting during the combustion cycle.
Specifications: Pressure Rating: 1.41" WC (Water Column); Function: Air Proving/Safety Cut-off; Compatibility: Lennox and Aire-Flo branded heating equipment.