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The genuine OEM Lennox 90W63 is an Interlink AQA034KAA scroll compressor rated at 34,100 BTUH, designed for 208/230V single-phase R-410A systems. As the heart of your Lennox condensing unit, the compressor circulates and pressurizes refrigerant to drive the entire cooling cycle. This factory-matched replacement is engineered to the exact specifications of your Lennox equipment for reliable, efficient operation.
Common failure symptoms: A failing compressor often produces warm air from the vents, loud humming or grinding noises, hard-starting, frequent tripping of the breaker, or a unit that runs but no longer cools. Electrical failures such as a shorted or open winding will stop the compressor entirely.
Why OEM matters: Scroll compressors are precision-matched to a system's refrigerant charge, oil type, and electrical characteristics. Installing the OEM Lennox 90W63 ensures correct displacement, proper motor windings, and full compatibility with your unit's controls — protecting your warranty and preserving rated efficiency. Aftermarket substitutes risk mismatched capacity, premature failure, and voided coverage.