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One of the Biggest Causes of Dishwasher Decline Is Easy to Prevent
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One of the Biggest Causes of Dishwasher Decline Is Easy to Prevent

CNET · May 7, 2026, 10:00 PM

Key takeaways

  • If the glasses, plates and bowls you pull from the dishwasher rack post-cycle look barely any better than when you stuck them in, it could be a small part of your dishwasher that's causing the problem.
  • Your dishwasher's filter quietly does some heavy lifting, trapping loose food particles to keep them out of that circulating wash water.
  • When compiling and analyzing our list of the best dishwashers, every expert I spoke with said that one of the most common causes for dishwasher repair calls and warranty claims is failing to clean the filter.

If the glasses, plates and bowls you pull from the dishwasher rack post-cycle look barely any better than when you stuck them in, it could be a small part of your dishwasher that's causing the problem.

Your dishwasher's filter quietly does some heavy lifting, trapping loose food particles to keep them out of that circulating wash water. If it's clean and installed properly, it means less need to pre-rinse dishes and a better chance that they come out sparkling. But if it's covered in food particles, that's where the problems could arise.

When compiling and analyzing our list of the best dishwashers, every expert I spoke with said that one of the most common causes for dishwasher repair calls and warranty claims is failing to clean the filter.

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