Noise level (dBA) is the most critical spec for open-concept homes. Look for models with a third rack and a stainless steel tub for better drying and durability.
Updated Apr 5, 2026
Average lifespan
A typical dishwasher lasts 9 to 12 years with proper maintenance. Hard water areas may see shorter lifespans due to mineral buildup. Signs of end-of-life include frequent repairs, consistently poor cleaning, visible rust in the tub, and excessive noise during operation.
Error: E24 / i30 (Drain Failure)
The dishwasher cannot drain water. Usually caused by a clogged filter, kinked drain hose, or blocked garbage disposal connection. Clean the filter assembly at the bottom of the tub, check the drain hose for kinks, and ensure the garbage disposal knockout plug has been removed if recently installed.
Error: Dispenser Not Opening
The detergent dispenser does not open during the wash cycle. Detergent tablets may not dissolve properly or the dispenser mechanism may be jammed. Clean any detergent buildup from the dispenser, ensure dishes are not blocking it, and check that the spring mechanism moves freely.
Error: E04 / E14 (Door Latch Failure)
The dishwasher cannot detect that the door is properly closed and latched. The door switch, latch mechanism, or wiring may be faulty. Ensure nothing is blocking the door from closing fully. If the latch clicks but the error persists, the door switch likely needs replacement.
Error: E22 / i10 (Water Fill Failure)
The dishwasher is not getting enough water. Check that the water supply valve is fully open, the inlet hose is not kinked, and the inlet filter screen is clean. A failed water inlet valve may need professional replacement.
Error: E09 / E01 (Heating Failure)
The dishwasher cannot heat the water to the required temperature. The heating element, thermistor, or control board connection may be faulty. Check if your hot water supply is working. If water enters hot but the error persists, the heating element likely needs replacement.
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Common Failure Modes
Drain pumps often fail or get jammed due to large food particles or broken glass. Inlet valves can also fail, either preventing water from entering or causing slow leaks.
Noise level (dBA) is the most critical spec for open-concept homes. Look for models with a third rack and a stainless steel tub for better drying and durability.
A typical dishwasher lasts 9 to 12 years with proper maintenance. Hard water areas may see shorter lifespans due to mineral buildup. Signs of end-of-life include frequent repairs, consistently poor cleaning, visible rust in the tub, and excessive noise during operation.
Top-rated dishwashers brands include GE, Bosch, ZLINE Kitchen and Bath, LG, Whirlpool and more. Covala Shopping tracks 684 dishwashers from 65+ brands.
Modern dishwashers are highly energy and water-efficient. The main ongoing costs are detergent and rinse aid, with energy costing just pennies per load.
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