OEM Lennox Blower Wheel — 47K31

The genuine OEM Lennox 47K31 blower wheel is the squirrel-cage fan that moves conditioned air through your furnace, air handler, and duct system. Precision-balanced at the factory, it spins on the blower motor shaft to deliver the exact airflow volume (CFM) your Lennox unit is rated for — ensuring proper heating and cooling performance and comfortable, even air distribution throughout your home.

Common signs of a failing blower wheel include weak or reduced airflow from the vents, unusual vibration or wobble, rattling and scraping noises, or a system that struggles to reach set temperature. Cracked blades, bent or missing fins, and caked-on dirt all throw the wheel out of balance, which strains the motor and bearings and can lead to premature motor failure.

Choosing the OEM Lennox 47K31 matters because blower wheels vary in diameter, width, blade pitch, and bore size. An incorrectly matched wheel moves the wrong amount of air, overheats the motor, and creates excess noise. The factory part guarantees correct dimensions, proper balance, and quiet, efficient operation for your Lennox equipment.