OEM Lennox Fan Motor — 43W49

The genuine OEM Lennox 43W49 fan motor drives the blower or fan assembly in your Lennox furnace, air handler, or condensing unit, moving conditioned air through the system at the airflow rates your equipment was engineered to deliver. Because it is a factory component, it matches the original horsepower, RPM, rotation, and mounting specifications of your Lennox unit for a true drop-in fit.

When a fan motor begins to fail you may notice weak or no airflow at the registers, unusual humming or grinding noises, a motor that runs hot and cycles on thermal overload, or a unit that trips the breaker. Bearings wear, windings short, and start capacitors strain the motor over years of continuous operation — replacing it restores full, quiet airflow.

Choosing the OEM 43W49 matters because Lennox blower and fan systems are balanced for specific motor characteristics; a generic substitute can alter airflow, increase energy use, and shorten the life of surrounding components. This factory motor ensures rated efficiency, correct fit, and reliable, long-term performance for your Lennox equipment.