Description
Trane HTR15357 Crankcase Heater Overview
The Trane HTR15357 is an OEM crankcase heater designed to protect refrigeration compressors from refrigerant migration and oil dilution during off-cycle periods. Operating at 70 watts and 230 volts, this heater maintains the compressor crankcase at an elevated temperature, preventing liquid refrigerant from accumulating in the oil sump — a leading cause of compressor failure on startup.
Why Crankcase Heaters Matter
During extended off cycles, especially in cold ambient conditions, refrigerant can migrate into the compressor crankcase and mix with the lubricating oil. When the compressor starts, this refrigerant-oil mixture can cause slugging, oil foaming, and premature bearing wear. A properly functioning crankcase heater eliminates this risk by keeping the oil warm and refrigerant-free, extending compressor life and reducing costly service calls.
Key Specifications
- Part Number: HTR15357
- Brand: Trane (OEM)
- Wattage: 70W
- Voltage: 230V
- Application: Compressor crankcase protection
Features & Benefits
- OEM Trane replacement part for precise fit and reliable performance
- Prevents refrigerant migration into compressor oil during off cycles
- Reduces risk of compressor slugging and oil foaming on startup
- Helps extend compressor service life and reduce warranty claims
- Designed for compatibility with Trane commercial and residential HVAC systems
Application
The HTR15357 is a direct OEM replacement crankcase heater intended for use with compatible Trane compressor assemblies. Always verify compatibility with your specific Trane unit model before installation. Consult the equipment service manual for proper installation procedures and wiring requirements.







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