Lennox 14A51 Pressure Switch 320819-301 maintaining the ignition sequence at

maintaining the ignition sequence at peak performance is vital for system reliability and preventing "no-heat" service calls

providing high-interchangeability and a stable resistance output for accurate environmental monitoring

Can this thermostat be used in dual-element systems

the "U" suffix denotes "universal" retail packaging

Lennox 14A51 Pressure Switch 320819-301 maintaining the ignition sequence atEngineered as a high precision safety and sequencing component, the Lennox 14A51 Pressure Switch provides critical draft verification for two stage gas furnaces. This OEM sensor features a factory calibrated set point high of 0. 74" W. C. and a set point low of 0. 41" W. C., ensuring the inducer motor maintains the exact static pressure required for safe combustion. Built to withstand the harsh vibration and thermal cycles of an 80% to 95% efficiency