Lennox 73W35 Pressure Switch 318973-401 Ensure the ceramic insulator is

Ensure the ceramic insulator is not directly exposed to the high-intensity flame core

The Cleveland Controls NS2-0548-00 Air Flow Sensing Switch is a high-precision differential pressure switch engineered for critical HVAC monitoring

Precision Defrost Timing: Optimizes the initiation and termination of defrost cycles to eliminate ice accumulation while maximizing energy efficiency

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streamlining the swap-out process for service contractors

Lennox 73W35 Pressure Switch 318973-401 Ensure the ceramic insulator isThe Lennox 73W35 Pressure Switch is a critical safety and operational component designed for 2 stage gas furnaces. This OEM Lennox replacement part, also identified by part number 102737 09, monitors the pressure differential created by the combustion air inducer to ensure the system is venting correctly before ignition. For multi stage heating, this dual stage pressure switch features precise set points: a high stage set point of 0. 55" W. C. and a