Lennox 18M62 Pressure Switch 319848-301 500 BTU capacity and is

500 BTU capacity and is optimized for use with R-22 refrigerant

and UDAS series gas-fired heaters

ensuring a drop-in fit for technicians dealing with aging HVAC blower motors

The Single Pole Single Throw (SPST) contact configuration ensures reliable circuit interruption or initiation when pressure thresholds are reached

Lennox 18M62 Pressure Switch 319848-301 500 BTU capacity and isThe Lennox 18M62 Pressure Switch is a critical dual stage furnace component designed for precise combustion air proving in high efficiency heating systems. As an OEM Lennox replacement part, this switch is factory calibrated to monitor the static pressure produced by the inducer motor, ensuring the system only proceeds to ignition when proper venting is established. This 2 stage pressure switch features a dual level actuation pointtypically set at 0.