OEM Lennox Blower Wheel — 98M74

The genuine OEM Lennox 98M74 blower wheel is the squirrel-cage fan that moves conditioned air throughout your home. Driven by the blower motor, this precision-balanced wheel pulls air across the heat exchanger or evaporator coil and pushes it into the ductwork. Its curved forward-facing blades are engineered to deliver the specific airflow (CFM) your Lennox system needs for proper heating and cooling performance.

Common failure symptoms: A damaged or dirty blower wheel causes weak airflow at the registers, uneven room temperatures, and reduced system efficiency. Bent or broken blades and accumulated debris throw the wheel out of balance, producing noticeable vibration, rattling, or a loud humming noise — and that imbalance places extra strain on the blower motor and its bearings, leading to premature motor failure if left unaddressed.

Why OEM matters: Blower wheels are matched to the motor's rotation, shaft diameter, and the blower housing dimensions. The OEM 98M74 is factory-balanced to your Lennox unit's exact CFM requirements, ensuring quiet operation, correct static pressure, and long motor life. An improperly sized aftermarket wheel can disrupt airflow, overheat the motor, and compromise comfort.