The average lifespan of a residential garbage disposal motor and housing assembly typically ranges between 8 to 12 years under normal household usage conditions. Longevity depends heavily on proper operating habits, such as avoiding fibrous or hard waste like bones and coffee grounds, always running a strong stream of cold water while grinding, and keeping the unit clean. Units subjected to heavy abuse or frequent jamming often fail within 3 to 5 years. Verification: Review your installation date records and check for structural corrosion or leaks around the motor housing.
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