Dishwasher repair

How to Replace a Dishwasher Filter Assembly

To replace a dishwasher filter assembly, disconnect power, pull out the lower rack, remove the old filter from the sump area, install the matching replacement, and test a short wash cycle to make sure water drains and the filter stays seated.

A worn, broken, or missing filter assembly can let food debris recirculate, cause poor cleaning, and sometimes lead to draining trouble. This is usually a straightforward repair from inside the tub, but you want the new filter to lock in securely and sit flat before you run the dishwasher again.

Before you start: Match your dishwasher's model number and compare the filter shape, locking tabs, and screen style before ordering.

Prepared by: Repair Riot Last updated: 2026-06-05 How we build and check guides

Safety first

  • Turn off power before reaching into the filter area.
  • Wear gloves if there may be broken glass or sharp debris in the bottom of the tub.
  • Do not force the filter assembly into place. A mismatched part can damage the sump or locking tabs.
  • Keep screws and small parts out of the sump opening so they do not fall into the pump area.

Tools you may need

Towels or sponge tool

Towel or sponge

Use it for: To soak up standing water around the filter area so you can see and work cleanly.

Shop towels and sponges
Work gloves tool

Work gloves

Use it for: To protect your hands from sharp debris or broken glass near the sump.

Shop work gloves
Flashlight tool

Flashlight

Use it for: To inspect the filter opening, locking tabs, and debris in the sump area.

Find a flashlight
Screwdriver set tool

Screwdriver set

Use it for: Some dishwashers use screws or a cover retainer around the filter area.

Shop screwdriver sets

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Step-by-step fix

Step 1: Make sure the filter assembly is the likely problem

  1. Open the dishwasher and pull out the lower rack.
  2. Look at the bottom center of the tub where the filter assembly sits.
  3. Check for a cracked frame, torn mesh, broken locking tabs, a filter that will not stay in place, or a missing section.
  4. If the filter is only dirty but otherwise intact, try cleaning it first before replacing it.
  5. Turn off power to the dishwasher at the breaker or unplug it if the plug is accessible.

If it works: You confirmed the filter assembly is damaged, missing, or no longer locking in properly, and the dishwasher is safely powered off.

If it doesn’t: If the filter looks intact and the real issue is standing water, a drain problem, or a spray arm issue, troubleshoot that problem before ordering a filter assembly.

Stop if:
  • You find broken glass packed deep in the sump that you cannot remove safely.
  • The filter opening, sump housing, or mounting points in the dishwasher tub are cracked or broken.
  • You cannot safely disconnect power to the dishwasher.

Step 2: Clear the work area and remove standing water

  1. Take out the lower dish rack and set it aside.
  2. Remove any loose debris sitting around the filter area by hand while wearing gloves.
  3. If there is standing water in the bottom, soak it up with a towel or sponge, or draw it out with a shallow cup or turkey baster.
  4. Use a flashlight to check for food buildup, labels, bone fragments, or glass around the filter opening.

If it works: The bottom of the tub is clear enough to access the filter assembly and see how it is held in place.

If it doesn’t: If water keeps returning immediately, the dishwasher may have a separate drain blockage that should be addressed before replacing the filter.

Stop if:
  • You find heavy sludge, melted plastic, or signs the wash pump area has been damaged.
  • You see exposed sharp metal or broken internal parts that make access unsafe.

Step 3: Remove the old dishwasher filter assembly

  1. Grip the filter assembly and turn or lift it the way it releases on your dishwasher. Many filters unlock with a short twist, while others lift straight out after a cover is removed.
  2. If a small cover or retainer is held by screws, remove the screws and keep them together.
  3. Lift the old filter assembly out carefully so debris does not fall into the sump opening.
  4. Compare the old part to the new one, including the overall shape, tabs, screen pattern, and height.

If it works: The old filter assembly is out, and the replacement matches the original well enough to install.

If it doesn’t: If the new part does not match the old one closely, pause and verify model compatibility before forcing anything into place.

Stop if:
  • The old filter will not release and feels like it will crack surrounding parts if forced.
  • The replacement has different tabs, diameter, or depth and clearly does not fit your dishwasher.

Step 4: Clean the filter seat and sump opening

  1. Wipe the filter seat, sealing surfaces, and surrounding tub floor with a damp towel.
  2. Remove any food debris caught around the opening so the new filter can sit flat.
  3. Check that no broken pieces of the old filter are still stuck in the locking area or under the edge of the opening.
  4. If you removed screws or a cover, clean those parts before reinstalling them.

If it works: The mounting area is clean, flat, and ready for the new filter assembly.

If it doesn’t: If the filter still will not sit flat during a dry fit, inspect again for hidden debris or a broken mounting point.

Stop if:
  • You discover the sump rim, locking slots, or support points are cracked or missing.

Step 5: Install the new filter assembly

  1. Set the new filter assembly into the opening in the same orientation as the old one.
  2. Press it down evenly and turn or lock it into place without over-tightening.
  3. Reinstall any cover or screws you removed earlier, tightening them snugly but not excessively.
  4. Give the filter a gentle wiggle to make sure it is seated and does not pop back up.
  5. Slide the lower rack back into the dishwasher.

If it works: The new filter assembly sits flat, locks in place, and feels secure.

If it doesn’t: If the filter rocks, lifts, or will not lock, remove it and recheck alignment, debris, and part fit before trying again.

Stop if:
  • The filter cannot lock because the dishwasher's internal mounting features are damaged.
  • You have to force the part to make it fit.

Step 6: Restore power and test the repair in real use

  1. Restore power to the dishwasher.
  2. Run a short rinse or wash cycle with the dishwasher empty.
  3. Listen for normal water movement and watch for unusual grinding, rattling, or poor draining.
  4. After the cycle starts and again after it drains, open the door and confirm the filter assembly is still seated properly.
  5. Check the tub bottom for leftover debris and make sure water is not pooling abnormally around the filter area.

If it works: The dishwasher runs normally, drains as expected, and the new filter assembly stays locked in place during use.

If it doesn’t: If cleaning is still poor or water remains in the tub, the dishwasher may also have a drain, pump, spray arm, or circulation problem that needs separate diagnosis.

Stop if:
  • You hear harsh grinding, see the filter come loose during operation, or notice leaking from inside the sump area.
  • The dishwasher still will not drain or shows signs of a deeper pump or sump failure.

Replacement Parts

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Verify the repair

  • The new filter assembly matches the old one in shape and locking style.
  • The filter sits flat and does not twist loose or lift up by hand.
  • A short cycle completes without unusual noise from the sump area.
  • Water drains out normally and debris is no longer collecting around a loose or broken filter.

FAQ

Can I run the dishwasher without the filter assembly?

It is better not to. The filter helps keep food debris out of the wash system and pump area. Running without it can lead to poor cleaning and possible internal damage.

How do I know if the filter needs replacement instead of cleaning?

Replace it if the mesh is torn, the frame is cracked, the tabs are broken, or it will not lock in place. If it is just greasy or clogged, cleaning is usually enough.

Why does my new filter assembly not lock in?

The most common reasons are debris in the mounting area, the wrong replacement part, or broken locking features in the dishwasher itself. Do not force it.

Will a bad filter assembly cause standing water?

Sometimes, but not always. A damaged filter can let debris reach the drain area, but standing water can also come from a separate drain hose, pump, or blockage problem.

Do I need tools for this repair?

Often no special tools are needed, but some models use a small cover or retainer with screws. A flashlight, towel, and gloves are helpful on almost every job.