Lennox 73W35 Pressure Switch 318973-401 assuming the amperage does not

assuming the amperage does not exceed 20A

Common Installation & Operation Questions What is the maximum static pressure for the VS2222

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

streamlining the swap-out process for service contractors

it provides the versatility required to tune system performance to specific static pressure requirements

Lennox 73W35 Pressure Switch 318973-401 assuming the amperage does notThe 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