Key Benefits Precision Engineering: Specifically tapped and threaded for 3/8-inch R410A connections to handle high operating pressures without weeping

the switch must close to prove airflow

000 BTU/hr rating to support a wide range of heating loads

reducing start-up failures in cold-weather conditions

Lennox 69W57 Pressure Switch 323269-701 Key Benefits Precision Engineering: SpecificallyThe Lennox 69W57 Pressure Switch is a critical OEM replacement part engineered for high efficiency, 2 stage HVAC systems. As a dual stage sensing component, it accurately monitors the differential pressure within the inducer housing to ensure the combustion process is safe before allowing ignition. This Lennox 102737 05 pressure switch features precise factory set parameters, with a high set point of 0. 68" W. C. and a low set point of 0. 30" W. C.,