773-316

This Lennox air pressure switch is a critical safety component designed for HVAC heating systems. Functioning as an air proving switch, it monitors the pressure generated by the draft inducer motor to ensure that combustion gases are being safely and effectively vented before allowing the ignition sequence to begin. By confirming proper airflow, this sensor prevents the furnace from operating under hazardous conditions, such as a blocked flue or a failing vent motor. Ideal for restoring reliable performance to your forced-air furnace, this switch is a necessary replacement when your heating system fails to ignite due to pressure-related safety lockouts.
Type: Air Pressure Switch
Size: Small
Application: Residential and commercial gas-fired furnaces, HVAC venting systems, and air proving safety circuits.
Specifications: Pressure-sensitive safety sensor designed to monitor draft inducer airflow and ensure proper venting of combustion gases.