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The genuine OEM Lennox 46K88 fan motor drives the fan blade or blower wheel that moves air through your Lennox HVAC system. Whether circulating conditioned air or supporting combustion airflow, this motor is a critical component for maintaining proper temperature, airflow volume, and overall system efficiency. It is built to the electrical and mechanical specifications Lennox requires for smooth, balanced operation.
When the 46K88 motor begins to fail, you may notice reduced or no airflow at the registers, unusual humming or grinding noises, a motor that runs hot and cycles on thermal overload, or a unit that trips the breaker. Worn bearings, an open winding, or a failed capacitor circuit are typical causes of these symptoms.
Installing the OEM Lennox 46K88 guarantees the correct horsepower, RPM, voltage, rotation, and shaft dimensions for your equipment. Aftermarket motors often require adapters and may not match the factory performance curve, leading to airflow imbalance or premature failure. The factory-matched 46K88 restores rated airflow and dependable, quiet performance to your Lennox system.