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The genuine OEM Lennox 97W54 draft inducer blower motor assembly pulls combustion gases through the heat exchanger and pushes them safely out the flue on your Lennox furnace. It runs during the pre-purge, ignition, and heating sequence to establish proper draft, which the pressure switch must confirm before the burners will light. This makes it a critical safety and performance component.
Common failure symptoms: furnace fails to ignite and locks out on pressure-switch fault, loud humming, grinding, or rattling from the inducer, the motor hums but the wheel won't spin, intermittent no-heat calls, or a burning-electrical smell. Worn bearings, a seized motor, or a cracked inducer wheel are typical causes.
Why OEM matters: the Lennox 97W54 assembly is matched to the exact airflow rating, wheel size, and mounting gasket your furnace needs to trip the pressure switch correctly. Aftermarket inducers can move the wrong volume of air, causing nuisance lockouts or unsafe venting. The factory assembly ensures correct draft, quiet operation, and full compatibility with your Lennox system.