The Carrier HT36DL481 Crankcase Heater is a critical OEM component designed to protect high-pressure compressors in Carrier, Bryant, and Payne HVACR systems. Operating at 460 Volts with a 125 Watt output, this insertion type heater ensures that the compressor oil remains at a higher temperature than the system’s coldest point. This specific thermal regulation prevents refrigerant migration and oil dilution, which are leading causes of compressor failure during cold starts. For technicians performing HVAC compressor maintenance, this heater provides a reliable solution to maintain lubricant viscosity and ensure immediate lubrication upon startup.

Constructed with a 3/8" diameter and a 3 3/4" insertion length, the HT36DL481 is engineered for a precise fit within the compressor well. The 58" leads offer ample length for routing through complex electrical cabinets to reach the contactor or terminal block. As a genuine Carrier replacement part, it meets strict factory specifications for moisture resistance and thermal conductivity. Integrating this crankcase heating element into your preventative maintenance schedule significantly reduces the risk of liquid slugging and mechanical wear in heavy-duty commercial or residential condensing units.

Key Benefits

• Prevents Refrigerant Migration: Keeps the crankcase warm to ensure refrigerant stays in the condenser and evaporator, not the oil.
• OEM Precision Fit: Specifically designed for Carrier HT36DL481 applications, ensuring 3/8" diameter compatibility without modifications.
• Enhanced Compressor Longevity: Eliminates "dry starts" by maintaining proper oil viscosity in sub-zero or low-ambient conditions.
• Industrial Grade Leads: Includes 58-inch factory-terminated leads for professional wire management and secure electrical connections.

Common Questions

What is the primary function of the HT36DL481 in a 460V system?
It provides constant low-level heat to the compressor oil reservoir, ensuring that refrigerant does not condense into the oil during the off-cycle, which would otherwise cause foaming and bearing damage at startup.

Is this heater compatible with 208/230V systems?
No, this is a 460-volt component. Installing this on a lower voltage system will result in significantly reduced wattage output and insufficient heating or potential electrical failure.

Can this insertion heater be used in non-Carrier compressors?
While designed for Carrier/Bryant/Payne 06D/06E series or similar units, it can be used in any compressor with a 3/8" diameter heater well, provided the voltage and insertion depth requirements are met.

Notes

Item is Non Cancelable / Non Returnable

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.