Where the filter is and why it clogs

Your KitchenAid dishwasher has a cylindrical filter basket at the bottom of the tub, usually in the center or toward the back. Food particles, grease, and detergent residue collect there during every wash cycle. If you don't rinse it out regularly, the filter clogs, water backs up, and dishes come out dirty or spotted.

The filter does essential work—it traps debris so it doesn't recirculate onto your clean dishes. But it can only do that job if you clean it. Most manufacturers recommend rinsing the filter after every few loads, or whenever you notice water pooling at the bottom of the tub.

Key Takeaways

  • The filter sits at the bottom center of the tub and lifts straight out with a quarter-turn counterclockwise.
  • Rinse it under warm running water and use a soft brush or old toothbrush to scrub away trapped food and grease.
  • For stubborn buildup, soak the filter in hot water with a few drops of dish soap for 15 to 20 minutes before scrubbing.
  • Replace the filter by pushing it down and twisting clockwise until it stops—do not force it.
  • If water still pools after cleaning, the spray arm or pump intake may be blocked and need inspection.

How to remove the filter safely

Start with an empty dishwasher. Open the door and look at the bottom of the tub. You will see a cylindrical basket, usually made of plastic mesh or perforated stainless steel. Grip it firmly and turn it counterclockwise about a quarter turn—roughly 90 degrees. It will lift straight up and out.

Some KitchenAid models have a second, upper filter that sits above the main one. If you see a flat screen or cap, remove that first by twisting counterclockwise. Once both pieces are out, set them aside on a clean towel.

Rinsing and scrubbing the filter

Hold the filter under warm running water and let the spray rinse away loose food and debris. Use your fingers or a soft brush to gently work away any stuck-on particles. Pay special attention to the underside and the mesh walls, where grease and film accumulate.

For light buildup, warm water and a soft brush are usually enough. If the filter looks gray or feels slick with grease, fill a bowl or sink with hot water, add a few drops of dish soap, and soak the filter for 15 to 20 minutes. Then scrub it again with an old toothbrush or soft-bristled brush. Never use a scouring pad or steel wool—these scratch the plastic and can damage the mesh.

Cleaning the filter housing and intake area

While the filter is out, take a moment to clean the housing—the space where the filter sits. Use a damp cloth or sponge to wipe away any sludge or debris at the bottom of the tub. Pay attention to the corners and the area around the spray arm.

Look for the pump intake, a small opening usually near the filter housing. If you see debris or buildup there, use a soft cloth or your finger to clear it gently. Do not poke hard or use sharp objects, as you can damage the pump. If the intake looks blocked and you cannot clear it by hand, the pump may need professional service.

Reinstalling the filter correctly

Once the filter is clean and dry, place it back into the housing. Push it down firmly and turn it clockwise about a quarter turn until it stops. You should feel a slight resistance—that means it is seated correctly. Do not force it or overtighten, as this can crack the plastic.

If your model has an upper filter, replace that first, then the main filter. Close the dishwasher door and run a short rinse cycle to make sure water drains properly. If water still pools at the bottom after cleaning, the spray arm may be clogged or the pump may have an issue that needs a professional to diagnose.

How often to clean and when to replace

Rinse the filter after every 2 to 4 loads, or whenever you notice water sitting at the bottom of the tub. If you run the dishwasher daily, a quick rinse once a week keeps buildup from getting heavy. Households that run it less often can stretch to every other week.

The filter itself lasts several years under normal use. If the mesh tears, cracks, or no longer holds its shape, it is time to replace it. You can order a replacement filter from KitchenAid using your model number, or find a compatible third-party filter at most appliance parts retailers. Installation is the same as reinstalling a clean filter.

Troubleshooting water pooling and poor drainage

If water still sits at the bottom after you have cleaned the filter, check the spray arm next. Unscrew or unclip the spray arm (your manual will show how) and rinse the holes under warm water. Mineral deposits or food particles can block these small openings and prevent water from circulating properly.

If the spray arm is clear and the filter is clean, the drain hose or pump may be blocked. The drain hose runs from the bottom of the tub to the sink drain or garbage disposal. If you hear a grinding noise or the water drains very slowly, the pump intake may be jammed. This usually requires a service call, as the pump is inside the dishwasher and not user-accessible.

Frequently Asked Questions

Can I run the dishwasher without the filter?

No. The filter prevents food and debris from recirculating onto your dishes and clogging the pump. Running the dishwasher without it will damage the spray arm and pump within a few cycles. Always replace the filter before running a wash.

What if the filter is stuck and won't turn?

Do not force it—you can crack the plastic. Let it soak in hot soapy water for 20 minutes to soften any dried buildup, then try again with a firm but gentle grip. If it still will not budge, the housing may be damaged and you may need a technician to remove it.

Is it normal for the filter to have a smell?

A slight odor is normal, but a strong smell usually means bacteria or mold is growing in the filter or housing. Soak the filter in a mixture of equal parts white vinegar and hot water for 30 minutes, scrub it well, and wipe down the housing with a vinegar-dampened cloth. Run an empty cycle with vinegar to freshen the tub.

Do I need to clean the filter if I rinse dishes before loading?

Rinsing helps, but you still need to clean the filter regularly. Even pre-rinsed dishes leave some food residue, grease, and detergent film. The filter will clog over time without maintenance, just more slowly than if you load heavily soiled dishes.