Lennox 63W40 Pressure Switch L99H008 eliminating the calibration drift often

eliminating the calibration drift often seen with generic sensors

the coil feeling excessively hot

Rugged Construction: Built for continuous duty in cycles ranging from 0°F to 175°F

Key Benefits Integrated Circuit Breaker: Provides essential overcurrent protection and serves as a local disconnect for safer servicing

The full-port design minimizes pressure drop across the valve

Lennox 63W40 Pressure Switch L99H008 eliminating the calibration drift oftenThe Lennox 63W40 Pressure Switch is a critical OEM replacement component for two stage furnaces and heat pumps, including the G60DF and G60UH series. Designed to ensure safe combustion cycles, this dual pressure switch features factory calibrated set points of 0. 20" WC for low stage operation and 0. 40" WC for high stage performance. As a veteran grade HVAC pressure switch, it monitors the negative pressure generated by the inducer motor, providing