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The genuine OEM Lennox 15W39 is a CR35K6E-TFD-875 reciprocating compressor rated at 34,900 BTUH (approximately 3 tons) for 460V, 3-phase R-22 systems. This piston-driven compressor compresses refrigerant vapor to circulate it through the condenser and evaporator, driving the cooling cycle in your Lennox air conditioning or heat pump unit. Reciprocating designs are rugged and field-proven, making the 15W39 an ideal replacement for legacy R-22 equipment still in service.
Common failure symptoms: Warm air from the vents, a compressor that clicks or hums without starting, frequent breaker trips, excessive vibration or knocking, high head pressure, or a hard-start condition. Electrical winding failures and mechanical valve wear are typical end-of-life indicators.
Why OEM matters: The factory-specified 15W39 matches Lennox's precise capacity, oil type, and 460V electrical requirements, protecting compatibility and warranty status. Because R-22 replacement compressors are increasingly scarce, sourcing the correct OEM unit ensures your system stays operational without costly retrofits. Install the genuine part for dependable performance in your Lennox equipment.