Carrier HT32BH853 Crankcase Heater 70W 480V

Product Description

The CARRIER HT32BH853 is an OEM crankcase heater designed to warm compressor oil and prevent refrigerant migration during off cycles. Refrigerant migration into the compressor crankcase causes oil dilution and bearing wear, leading to hard starts and premature compressor failure. This heater maintains oil temperature when the compressor is idle, ensuring clean starts and protecting system longevity. Rated at 70 watts and 480 volts with a round profile, it matches original dimensions and connector configurations for a direct-fit installation. Licensed HVAC technicians handling commercial refrigerant systems are the primary installers.

The HT32BH853 is suited for commercial rooftop and split-system applications where compressor protection during extended off periods is critical. It is commonly installed on systems operating in low-ambient or seasonal-shutdown conditions where refrigerant migration risk is elevated. Compatible models listed in manufacturer documentation include 48TJD028 680, 50TJ 028 670, and 559FEX300000AJ. The round shape and standard wiring terminations simplify drop-in replacement without modification to existing control wiring or crankcase heater circuits.

Key Features

• 70-watt output warms compressor oil to prevent refrigerant migration during off cycles
• 480-volt rating matches the power supply configuration of compatible commercial equipment
• Round profile matches OEM dimensions for direct fitment without modification
• OEM part ensures connector and dimensional compatibility with original wiring harnesses
• Protects compressor bearings and extends component service life by reducing oil dilution

Compatibility

Listed compatible models include 48TJD028 680, 50TJ 028 670, and 559FEX300000AJ. Verify the crankcase heater part number against the unit nameplate and service literature before installation to confirm fitment.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with commercial refrigeration systems and high-voltage electrical work. Disconnect and lock out all power to the unit before removing or installing the crankcase heater. Confirm the replacement heater wattage and voltage rating match the original before energizing. Allow the heater adequate warm-up time before starting the compressor, as required by the equipment manufacturer's service documentation.

Technical Specifications

• Wattage: 70W
• Voltage: 480 volts
• Shape: Round
• Length: 1 inch
• Width: 1 inch
• Height: 1 inch

Standard Information

• Brand: CARRIER
• Manufacturer Part Number: HT32BH853