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The genuine OEM Lennox 25M87 is a Copeland ZR72KC-TF5-830 scroll compressor rated at 73,500 BTUH, 200/230V, R-22, 3-phase. It circulates and compresses refrigerant to move heat out of the conditioned space, and its scroll design provides smooth, efficient operation across the full load range of your Lennox unit. This is a direct factory replacement matched to Lennox specifications.
Common failure symptoms: Warm air at the registers despite a running outdoor unit, repeated breaker trips on startup, loud mechanical noise or vibration, high head pressure, or a compressor that won't start and only hums. These point to failed windings, a seized scroll set, or a tripped internal overload.
Why OEM matters: The 25M87 is engineered for R-22 systems with a specific oil type, displacement, and electrical profile. Because R-22 is phased out, using the correct OEM 25M87 keeps a serviceable legacy Lennox system running without the compatibility risks of a generic swap. Match voltage and phase before installing, replace the liquid-line drier, and confirm charge and superheat after the repair.