Trane HTR15199 Crankcase Heater

The Trane HTR15199 Crankcase Heater is a critical OEM replacement part designed to maintain thermal equilibrium within the compressor sump. Engineered for 460-480V industrial circuits, this 90/100W heater prevents the dangerous migration and condensation of liquid refrigerant into the crankcase oil during off-cycles. By keeping the lubricant at a temperature higher than the coldest part of the system, the HTR15199 eliminates the risk of oil dilution and catastrophic bearing failure during high-torque cold starts. This HVAC compressor heater is the direct, factory-authorized successor for discontinued models HTR2529 and HTR6621, ensuring seamless mechanical and electrical integration into existing Trane and American Standard condensing units. For technicians servicing high-voltage chillers or commercial heat pumps, this unit provides the necessary wattage to stabilize suction line pressures and maintain optimal viscous properties of the compressor oil, directly supporting the long-term operational integrity of the refrigeration circuit.

• Direct OEM Compatibility: Engineered as a drop-in replacement for HTR2529, HTR6621, and HTR12364, maintaining factory specifications for resistance and output.
• Optimized Heat Transfer: Delivers 90W to 100W of targeted thermal energy to prevent refrigerant from striking the crankcase during low ambient conditions.
• High-Voltage Rating: Specifically rated for 460V / 480V single-phase applications, matching standard commercial power configurations.
• Compressor Protection: Mitigates liquid slugging and oil foaming, which are common causes of mechanical seizing in large-tonnage systems.

Is the HTR15199 compatible with older HTR6621 installations?
Yes, the HTR15199 is the official superseding part for the HTR6621. It shares the same electrical profile and is designed for the same physical compressor footprints.

Can this heater be used on 208/230V systems?
No, this unit is engineered for 460-480V circuits. Installing it on lower voltage will result in insufficient wattage output, failing to protect the compressor from migration.

What happens if the crankcase heater fails during winter?
Without active heating, refrigerant vapor travels to the coldest point (the compressor). It condenses into a liquid, diluting the oil and leading to "washed out" bearings upon the next startup.

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.