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The 89M21 is a genuine OEM Lennox ZR26KA-PFV-830 Copeland scroll compressor rated at 26,000 BTUH, 208/230V, R-22 refrigerant, single phase. The compressor is the driving force of your outdoor condensing unit, compressing and circulating refrigerant through the coils to carry heat out of your home. This scroll-type unit offers smooth, quiet operation and dependable capacity, engineered to meet the precise electrical and cooling specifications of the Lennox systems it was designed for.
Common failure symptoms: the outdoor unit runs but produces no cool air, the compressor hums or buzzes without starting, tripped breakers, hard starts, loud rattling or grinding, or shutdowns caused by overheating on the thermal overload. A failed compressor is the most frequent reason a system stops cooling entirely.
Why OEM matters: the factory-specified 89M21 delivers the correct displacement, R-22 compatibility, oil charge, and electrical characteristics for your Lennox equipment, safeguarding warranty coverage and rated efficiency. Generic replacements can mismatch capacity or refrigerant type, leading to early failure. A licensed HVAC technician should recover refrigerant and complete the installation.