An LG dishwasher lasts an average of 8 to 12 years with normal residential use and proper maintenance, which is in line with the industry average for modern dishwashers of 8 to 10 years and slightly above average due to LG's direct-drive motor design. LG dishwashers use an inverter direct-drive motor that has fewer moving parts and no belt, reducing wear and vibration compared to traditional motors, and this motor carries a 10-year limited warranty. Actual lifespan depends heavily on usage frequency, water hardness, detergent type, and maintenance habits. A household running the dishwasher daily will wear out pumps, seals, and racks faster than one running 3 to 4 times per week. Hard water causes mineral scale buildup on the heater, spray arms, and inlet valve, shortening life unless you use rinse aid and periodic descaling. Using too much detergent or non-HE detergent creates residue that clogs the filter and pressure sensor. To maximize lifespan, clean the cylindrical filter assembly monthly by twisting it out and rinsing under running water, clean spray arms every 3 months by removing food debris from holes, run a Tub Clean cycle monthly with a dishwasher cleaner like Affresh or white vinegar on hot, ensure the dishwasher is level to prevent leaks, and use a surge protector. The first parts usually needing replacement are the drain pump and inlet valve after year 6 to 8.
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