Description
The Trane HTR03384 Crankcase Electric Heater Sump fits at the base of a compressor oil sump, applying low-level heat to prevent refrigerant migration into lubricant during off-cycle periods. Fluid absorbed into oil dilutes lubrication quality, and this heat raises chamber temperature just enough to drive dissolved content out before the next startup. It connects to the unit’s electrical supply through spade terminals, drawing minimal wattage while the compressor sits unused. Protective measures in HVAC systems begin at the oil reservoir, where this heater preserves solvent integrity by keeping thermal levels above the cooling fluid saturations.
