Lennox 80W51 Pressure Switch 319852-301 always match the frequency to

always match the frequency to the local power supply

Universal Compatibility: Direct replacement for discontinued models 5H0730980002 and 5651-023

Smith Cyclone models to ensure seamless electrical communication

a different P29 series model must be selected

Can this unit be installed in both horizontal and vertical air handler configurations

Lennox 80W51 Pressure Switch 319852-301 always match the frequency toThe Lennox 80W51 Pressure Switch is an essential safety component designed for Lennox furnaces and higher efficiency HVAC systems. This differential pressure switch is factory calibrated to a 0. 55" w. c. set point, ensuring reliable monitoring of the combustion blower and venting pressure. As a genuine OEM Lennox replacement part, this switch precisely detects the negative pressure required to safely initiate the furnace ignition sequence, preventing