Lennox 93M05 Crankcase Heater 30067439-890 and the motor windings show

and the motor windings show equal resistance (under 20 ohms)

utilizing a physical interrupter and non-PCB oil to ensure reliable protection against internal electrical failure in the field

single-layer fabric construction allows for smaller pulley diameters without sacrificing structural integrity

When performing HVAC furnace limit switch replacement

this Permanent Split Capacitor (PSC) motor delivers consistent torque and high operational efficiency

Lennox 93M05 Crankcase Heater 30067439-890 and the motor windings showThe 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