Lennox 93M05 Crankcase Heater 320734-701 As a high-accuracy thermistor

As a high-accuracy thermistor

the 71K11 ensures the inducer motor has established correct airflow before allowing the ignition sequence to proceed

This heater is rated for 230V AC applications and is not compatible with 120V circuits

eliminating the risk of bypass or improper venting associated with universal kits

or "open pressure switch" fault codes on the control board

Lennox 93M05 Crankcase Heater 320734-701 As a high-accuracy thermistorThe Lennox 93M05 Crankcase Heater is a critical OEM component designed to prevent refrigerant migration and oil foaming in HVACR compressors during the off cycle. This belt type compressor heater provides a constant 40 watts of thermal energy at 240 volts, maintaining the lubricant at a temperature higher than the coldest part of the system. Engineered for adaptability, the 93M05 fits compressor housings with a 7" to 8" diameter (adjustable range