Carrier HT31AZ121 Crankcase Heater 321142-301 Always verify your specific model

Always verify your specific model and serial number against manufacturer service bulletins to ensure the correct revision is used

promoting long-term reliability of the evaporator coil and condenser match-up

Rugged Build Quality: Features corrosion-resistant materials designed to withstand the acidic environmental conditions inherent in exhaust venting

Compatibility depends on the specific elastomer material provided in the kit

Multi-Speed Performance: Three distinct speed taps allow for optimized heating and cooling airflow profiles

Carrier HT31AZ121 Crankcase Heater 321142-301 Always verify your specific modelThe Carrier HT31AZ121 Crankcase Heater is a critical component for maintaining compressor reliability in commercial and residential refrigeration systems. This insertion type heater is specifically engineered for Carrier 05T and 06T compressors, as well as the 5H series (5H40, 5H60, 5H80, 5H120). By providing 200 Watts of targeted heat at 120 Volts, it ensures that the compressor oil remains at a temperature higher than the coldest part of the