How to Clean a Dishwasher Filter

By
Mary Marlowe Leverette
Mary Marlowe Leverette 2018
Mary Marlowe Leverette
Mary Marlowe Leverette is one of the industry's most highly-regarded housekeeping and fabric care experts, sharing her knowledge on efficient housekeeping, laundry, and textile conservation. She is also a Master Gardener with over 40 years' experience; writing for over 20 years.
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Updated on 08/22/22
Reviewed by
Brandon Pleshek
Brandon Pleshek headshot.
Reviewed by Brandon Pleshek
Brandon Pleshek of Clean That Up! is a seasoned veteran of the cleaning industry with over 20 years of experience in commercial and residential cleaning. He is a member of The Spruce's Cleaning and Organizing Review Board
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Dishwasher filter laying in bottom of dishwashing machine

The Spruce / Cristina Tudor

Project Overview
  • Working Time: 15 mins
  • Total Time: 15 mins
  • Skill Level: Beginner
  • Estimated Cost: $0-5

Did you know that there's a filter in your dishwasher which needs to be routinely cleaned? The filter's job is to trap loose particles of food and greasy residue and prevent them from being redeposited onto the dishes. If the filter is clogged, it can't do its job. A dirty filter may be the problem if your dishes are not coming out of the dishwasher fully cleaned. Read on to learn how to clean the filter in a dishwasher so your dishes can be spic-and-span again.

How Often to Clean a Dishwasher Filter

The best way to refresh a self-cleaning filter is to give your dishwasher a thorough cleaning with distilled white vinegar and baking soda at least once a month or use a commercial dishwasher cleaner. Manual-clean filters should be cleaned at least once a month. If the clean dishes feel gritty or have bits of food left on them after washing, or the dishwasher has a really unpleasant odor, you should clean the filter more often.

Cleaning the filter takes only a few minutes and uses supplies you probably have on hand. Taking time to clean it is well worth the effort to save the time and energy of having to wash the dishes again.

Before You Begin

Some older dishwashers contain a self-cleaning filter that works much like a garbage disposal. However, the built-in grinder caused the dishwasher to be excessively loud, and newer models turned to a filter that requires manual cleaning. Both types of filters are located on the dishwasher's interior floor under the rotating spray arm. You can determine which type of filter you have by checking the owner's manual or visiting the manufacturer's website.

Follow these steps to clean your dishwasher's filter.

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What You'll Need

Equipment / Tools

  • Sink or large bowl
  • Dishcloth or sponge
  • Old toothbrush
  • Soft-bristled nylon brush

Materials

  • Dishwashing liquid containing a degreaser
  • Distilled white vinegar (optional)

Instructions

Materials and tools to clean a dishwasher filter

The Spruce / Cristina Tudor

How to Clean Your Dishwasher Filter

  1. Locate the Dishwasher Filter

    Since the filter is located on the interior floor of the dishwasher, it is easier to locate and remove if you take out the bottom rack of the dishwasher. Most manual filters are round, twist-lock into place, and often have arrows indicating which way to turn the cylinder to remove it.

    Some filters are a single cylindrical component, others have a secondary flat filter below the cylinder. Most flat filters do not lock in place and can be easily lifted out by using the hole in the middle of the filter. You will not need any tools.

    Dishwasher filter located in bottom and center of dishwashing machine

    The Spruce / Cristina Tudor

  2. Remove the Filter

    Following the guideline arrows, twist the cylindrical filter to unlock it—most unlock by turning counter-clockwise. Once unlocked, pull it up gently to remove it from the dishwasher floor. If there is a second flat filter, remove it as well.

    Dishwasher filter removed from cylindrical filter with orange gloves

    The Spruce / Cristina Tudor

  3. Prepare a Cleaning Solution

    Fill a sink or large bowl with hot water and few drops of dishwashing liquid. Use a good detergent that contains a degreaser for easier cleaning.

    Sink being filled with water and dishwashing liquid

    The Spruce / Cristina Tudor

  4. Soak and Scrub the Filter

    Place the filter(s) in the cleaning solution and allow it to soak for a few minutes to loosen the debris. This is particularly helpful if there are bits of paper labels stuck to the filter. Use a sponge, old toothbrush, or soft-bristled nylon brush to scrub away any trapped debris in the filter.

    Old toothbrush scrubbing dishwasher filter with trapped debris

    The Spruce / Cristina Tudor

  5. Rinse Well

    Rinse the filter(s) in hot water.

    Dishwasher filter rinsed under running hot water from kitchen sink

    The Spruce / Cristina Tudor

  6. Wipe Down the Filter Housing

    Dip a sponge or dishcloth in the hot soapy water and wipe down the opening where the filter was removed to get rid of any food particles or grease build-up.

    Sponge with soapy water wiping down over filter housing with orange gloves

    The Spruce / Cristina Tudor

    Tips

    Since you're already wiping down the filter opening and the bottom rack is removed from the dishwasher, it's the perfect time to do a quick wipe down of the rack, the spray arms, and the inside of the dishwasher.

  7. Replace the Filter(s)

    Reverse the steps you used to remove the filters. If there is one, replace the flat filter first. Next, insert the freshly cleaned cylindrical filter making sure to lock it securely in place.

    Clean dishwasher filter replaced in filter housing with orange gloves

    The Spruce / Cristina Tudor

Tips to Keep Your Dishwasher Filter Clean Longer

  • Scrape away excess food from the dishes before you load them into the dishwasher.
  • Once a month when the dishwasher is empty, run a cleaning cycle to help cut through any greasy build-up on the interior and the filter. Put two cups of distilled white vinegar in an open container on the top rack. Run a regular hot water wash cycle to complete the cleaning. 
  • Add a note to your calendar as a reminder to clean the dishwasher filter each month.
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