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The OEM Lennox 90W71 is a Copeland ZR48K5-PFV-800 scroll compressor rated at 48,200 BTUH, 208/230V, R-22, single-phase. It uses two interleaved scrolls to compress refrigerant in a continuous, smooth motion, delivering quieter operation, higher efficiency, and greater reliability than older reciprocating compressors in your Lennox condensing unit or heat pump.
Common failure symptoms include a compressor that hums but won't start, tripped breakers or a blown fuse, loss of cooling while the fan still runs, abnormal grinding or rattling noises, and overheating that trips the internal thermal overload. Low suction pressure, a locked rotor, or a grounded winding usually signal that the compressor must be replaced.
Why OEM matters: This scroll compressor is matched to the exact voltage, refrigerant, and BTU capacity of your Lennox R-22 system. Using the genuine 90W71 ensures correct amp draw, proper oil charge, and full compatibility with your unit's contactor, capacitor, and controls — preserving efficiency and protecting your equipment warranty. Refrigerant recovery and installation should be performed by a licensed HVAC technician.