Carlyle HT31AZ120 Crankcase Heater

The Carlyle HT31AZ120 Crankcase Heater is a critical component for maintaining compressor reliability in low-ambient conditions. As an insertion type heater, it provides direct thermal transfer to the lubricant, effectively preventing refrigerant migration and ensuring a flooded start does not occur after extended off-cycles. Rated at 120 Volts and 100 Watts, this heater is engineered for high-performance thermal regulation in Carlyle semi-hermetic compressors. With a 7-inch insertion length and 48-inch leads, it offers the necessary reach for deep-sump applications, providing a robust electrical connection to the system's control circuit. This specific model, the Carlyle HT31AZ120, serves as the updated direct replacement for HT31AR100, maintaining compatibility with existing physical ports while meeting modern technical standards. Utilizing an immersion heater like the HT31AZ120 is a standard industry practice to minimize oil dilution and extend the operational life of HVACR refrigeration compressors.

• Direct Thermal Transfer: The insertion design ensures the 100-watt heating element is in close proximity to the oil, offering superior efficiency over strap-on alternatives.
• Replaces HT31AR100: Seamlessly drops into the established mounting footprint for legacy Carlyle compressor models, reducing field modification time.
• Extended Lead Length: 48-inch leads provide ample slack for routing through tight mechanical compartments to the main contactor or terminal box.
• Optimized Startup: Maintains lubricant temperature to ensure proper viscosity and prevent liquid slugging during initial torque application.

• Is this compatible with 240V systems? No, the HT31AZ120 is specifically rated for 120 Volts. Operating this heater at higher voltages will lead to immediate element failure.
• Can this be used in 06D or 06E compressors? This heater is commonly applied in Carlyle 06 series compressors. Always verify the insertion port depth matches the 7-inch insertion length before installation.
• What is the return policy for this part? Note that the HT31AZ120 is Non-Cancelable and Non-Returnable once ordered. Confirm your technical specifications prior to purchase.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.