OEM Lennox Blower Wheel — 21706

The genuine OEM Lennox 21706 blower wheel is the rotating squirrel-cage component that moves conditioned air through your furnace or air handler and out into the ductwork. Precision-balanced from the factory, it delivers the rated airflow (CFM) your Lennox system was engineered around, keeping heating and cooling even from room to room while running quietly.

When a blower wheel fails or fouls, the symptoms are hard to miss: weak airflow at the registers, a noticeable drop in heating or cooling performance, rattling, scraping, or vibration noises, and short-cycling caused by overheating or a tripped limit switch. Bent fins, cracked hubs, a loose set screw, or a heavy buildup of dust and debris all throw the wheel out of balance and strain the blower motor.

Choosing the OEM 21706 matters because Lennox blower wheels are matched to a specific motor, housing, and blade geometry. An aftermarket wheel with the wrong diameter, width, or rotation can under- or over-load the motor, kill efficiency, and shorten motor life. This factory replacement drops in for a correct fit, restored airflow, and balanced, long-lasting operation.