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The genuine OEM Lennox 25M85 is a Copeland ZR57KC-TFD-830 scroll compressor rated at 57,500 BTUH, running on 460 volts, 3 phase, and charged for R-22 refrigerant. This compressor drives your Lennox condensing unit by pressurizing and circulating refrigerant to reject heat and maintain cooling. Its scroll design offers efficient, quiet, and reliable performance with a long service life.
Common failure symptoms: the outdoor unit won't start, buzzes and trips on overload, emits a burnt-winding odor, delivers weak or no cooling, or generates loud rattling and knocking sounds. An open or grounded winding, or a locked scroll, indicates the compressor must be replaced.
Why OEM matters: the 25M85 is matched precisely to your Lennox unit's 460V electrical service, tonnage, and refrigerant type. A factory-correct compressor preserves warranty coverage, restores rated efficiency, and integrates seamlessly with existing controls and wiring. Avoid the fit and performance risks of aftermarket parts by choosing the genuine Lennox replacement.