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The Lennox 90W64 is a genuine OEM Interlink 104530-15 scroll compressor rated at 41,500 BTU/h for 208/230V single-phase R-410A systems. It serves as the pump of your Lennox condensing unit, pressurizing and circulating R-410A refrigerant to power the entire air-conditioning cycle. This factory-matched replacement reproduces the original's capacity, mounting footprint, and electrical draw for a reliable drop-in fit.
Common failure symptoms: Weak or absent cooling while the outdoor fan spins, a compressor that hums or buzzes without starting, tripped breakers or blown fuses, heavy vibration, knocking, or grinding noises, and repeated short-cycling triggered by the internal overload. Burnt electrical terminals or acidic oil signal a compressor burnout.
Why OEM matters: R-410A scroll compressors must be precisely matched on tonnage, refrigerant oil, and voltage to protect system performance. Installing the correct Lennox 90W64 maintains rated efficiency, ensures compatible POE lubricant, and keeps factory warranty coverage valid. Non-OEM alternatives risk capacity mismatch, electrical stress, and premature failure.