Description
The Trane HTR16543 is an OEM sump heater engineered to protect compressors in Trane HVAC systems by maintaining crankcase oil temperature during off-cycle periods. Operating at 40 watts and 460 volts, this 6.5-inch sump heater prevents refrigerant from migrating into the compressor oil sump — a leading cause of compressor wear and premature failure.
How Sump Heaters Work
During equipment shutdown, refrigerant can dissolve into compressor oil and accumulate in the crankcase. On startup, this refrigerant-oil mixture can cause slugging, oil foaming, and bearing damage. The HTR16543 keeps the sump warm enough to drive off dissolved refrigerant, ensuring the compressor starts with clean, properly viscous lubricating oil.
Key Specifications
- Part Number: HTR16543
- Brand: Trane (OEM)
- Wattage: 40W
- Voltage: 460V
- Heater Length: 6.5 inches
- Type: Compressor Sump / Crankcase Heater
Features & Benefits
- OEM Trane replacement part for exact-fit installation
- Prevents refrigerant migration into compressor oil during off-cycles
- Reduces risk of compressor slugging, oil foaming, and bearing failure
- 40W heating element delivers efficient, targeted warmth to the crankcase
- 460V rating suited for commercial HVAC equipment
- 6.5″ form factor designed for compatible Trane compressor sumps
Application
Designed as a direct OEM replacement for compatible Trane commercial HVAC and refrigeration systems. Always verify your equipment model number before ordering to confirm fitment.
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