Trane HTR13420 Crankcase Heater Black Plug

The Trane HTR13420 is a Crankcase Heater, a small, black plug-in part that is used to keep the refrigerant from freezing inside the compressor crankcase during cold climate use. This is especially vital for refrigeration and air conditioning systems because the refrigerant in its solid state is dangerous to the compressor. The heater is used to make heat inside the crankcase, maintain the refrigerant in its liquid form, and the condition required for the running of the compressor in low temperatures like below zero. This product is applied mainly to HVAC systems and has several advantages, increased efficiency of the system, increased service life of equipment, and reduced maintenance amounts due to the prevention of compressor failure due to low temperatures.