including the FX

ensuring optimized centrifugal force to maintain consistent static pressure and airflow across your indoor coils

What are the symptoms of a failed York pressure switch

provided the system is configured correctly for the fuel type

Refer to the Danfoss selection software or nominal capacity tables to match the No

Lennox 34M73 Pressure Switch 321702-401 including the FXThe Lennox 34M73 Pressure Switch is a critical safety component designed for precise furnace draft inducer monitoring in residential and commercial heating systems. This OEM Lennox replacement part is factory calibrated to a . 22"wc set point, ensuring the exhaust vent maintains adequate negative pressure before allowing the ignition sequence to proceed. Featuring a Single Pole Single Throw (SPST) configuration and a standard 1 4" barb connection,