OEM Lennox ECM 142R Fan Motor — 98M39

The genuine OEM Lennox 98M39 is an ECM 142R fan motor engineered to move conditioned air through your Lennox system with precise, energy-efficient control. Electronically commutated motors ramp speed up and down smoothly to maintain steady airflow, quieter operation, and lower electricity use than traditional PSC motors. This factory part is calibrated to your Lennox blower assembly for correct torque, speed profiles, and mounting.

Common failure symptoms: Weak or no airflow from the vents, the motor humming but not spinning, intermittent shutdowns, unusual noise or vibration, overheating, or the blower failing to start on a call for heating or cooling. A failing ECM control module or worn bearings will often trigger error codes at the furnace or air handler control board.

Why OEM matters: Lennox ECM motors are matched to specific control modules and airflow tables. Installing the exact 98M39 replacement guarantees the motor communicates correctly with your system, preserves rated efficiency, and protects your warranty. Aftermarket substitutes can cause airflow imbalances, comfort problems, and premature failure. Insist on genuine Lennox for a proper, lasting repair.