The average operational lifespan of a residential indoor air handler blower motor typically ranges from ten to fifteen years, matching the general longevity of the wider HVAC air handler or furnace system, provided it receives regular annual maintenance. This lifespan can be heavily extended or shortened depending on how consistently homeowners replace indoor air filters every ninety days; a severely clogged air filter starves the blower motor of airflow, forcing it to work twice as hard against high static pressure, leading to premature overheating and bearing wear. Electrical power surges can also shorten motor life. You can monitor your blower motor's health by listening for unusual humming or squealing noises during operation. You can verify optimal motor performance when diagnostic testing confirms steady electrical amperage draw and balanced airflow across all supply vents.
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