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The genuine OEM Lennox Y4631 condenser fan motor drives the outdoor fan that pulls air across the condenser coil, releasing heat from the refrigerant so your Lennox air conditioner or heat pump can cool efficiently. It is engineered to the exact voltage, RPM, rotation, and mounting specifications your Lennox unit was designed around, ensuring proper airflow and rated performance.
Common failure symptoms: a condenser fan that won't spin or hums without starting, a motor that runs hot and cuts out on thermal overload, loud grinding or rattling from worn bearings, or a unit that trips the breaker and loses cooling capacity. A failing fan motor also causes high head pressure and can shorten compressor life.
Choosing OEM matters on Lennox equipment because generic motors often differ in shaft size, horsepower, capacitor requirements, and rotation direction — mismatches that lead to poor cooling, premature failure, and voided warranties. The Y4631 is a direct factory replacement that fits and performs exactly as the original, protecting your compressor and restoring full system efficiency.