Where the filter is and why it matters
The filter in a KitchenAid dishwasher sits at the bottom of the tub, usually under a removable cover or cage. Food particles, grease, and debris collect there during every wash cycle. If you do not clean it regularly, water drains slowly, dishes come out spotted or cloudy, and the machine has to work harder to finish a cycle.
Most KitchenAid models have two filter parts: an upper filter basket (a cage that catches larger pieces) and a lower filter (a fine mesh that traps smaller particles). Both need attention, though the lower filter is the one that clogs most often. Cleaning takes about five minutes and requires no tools.
Key Takeaways
- The filter sits at the bottom center of the tub under a removable cover or cage that twists or lifts out by hand.
- Remove large food chunks by hand, then rinse both filter parts under warm running water to clear trapped debris.
- For stubborn buildup, soak the filters in hot water with a bit of dish soap for 15 to 20 minutes, then scrub gently with a soft brush.
- Clean the filter every month if you run the dishwasher weekly, or every two weeks if you run it daily.
- A clogged filter is the most common reason dishes come out wet or spotted, so this is the first thing to check if washing results drop.
How to remove the filter
Open the dishwasher door and look at the bottom center of the tub. You will see either a cylindrical cage or a flat cover. On most KitchenAid models, the upper filter basket twists counterclockwise to release — grip it firmly and turn it about a quarter turn until it stops, then lift straight up. Some models have a cage that straightforward lifts out without twisting.
Once the upper filter is out, you will see the lower filter underneath. It is usually a flat, rectangular piece with a fine mesh surface. Lift it straight up and out. Set both pieces on a clean towel so you do not lose them.
Rinsing and basic cleaning
Hold the upper filter basket under warm running water and let the water flow through it from the inside out. Use your fingers to wipe away any visible food or grease. Pay attention to the ridges and grooves where particles hide. Rinse until the water runs clear.
Do the same with the lower filter, holding it under warm water and rubbing the mesh gently with your fingers. The mesh is delicate, so do not scrub hard or use a rough cloth. If particles are stuck in the mesh, let the water pressure dislodge them rather than forcing them out.
Dealing with stubborn buildup
If rinsing alone does not remove the grime, fill a bowl or sink with hot water and add a squirt of dish soap. Place both filters in the water and let them soak for 15 to 20 minutes. The heat and soap will loosen grease and mineral deposits.
After soaking, use a soft-bristled brush — a toothbrush works well — to gently scrub the mesh and the cage. Work in one direction and do not press hard. Rinse thoroughly under running water until no soap remains. If white mineral deposits are visible, you can soak the filters in equal parts white vinegar and water for 30 minutes instead, then rinse well.
Cleaning the filter well itself
While the filters are out, take a moment to clean the well where they sit. Use a damp cloth or sponge to wipe the bottom of the tub and the sides of the filter cavity. Food particles and grease can collect there too, and they will just clog the filters again if you leave them.
If you see standing water in the well, that is a sign the drain is blocked. Use a flashlight to look down the drain opening and see if debris is visible. If so, use a straightened paperclip or a small brush to clear it gently. Do not force anything into the drain, as you can damage the pump.
Putting the filter back
Make sure both filters are completely dry before reinstalling them. Place the lower filter back into the well first, pressing it down firmly so it sits flat. Then place the upper filter basket on top and twist it clockwise until it stops. You should feel it catch — do not force it or you may crack the plastic.
Close the door and run a short cycle to make sure water drains properly. If water pools at the bottom again, the filter may not be seated correctly. Open the door, remove the filters, and try again, making sure the lower filter is completely flat in the well.
How often to clean
If you run your dishwasher once or twice a week, clean the filter once a month. If you run it daily or nearly every day, clean it every two weeks. If you have a large household or often wash heavily soiled pots and pans, you may need to clean it weekly.
The easiest way to remember is to clean the filter the same day you clean the dishwasher interior — wipe down the walls and spray the jets while you are at it. This keeps the whole machine running efficiently and extends its life.
Frequently Asked Questions
Can I put the filters in the dishwasher to clean them?
No. The high heat and spray action can damage the mesh and warp the plastic cage. Always hand-wash the filters under running water or soak them in a bowl. Putting them through a cycle defeats the purpose of cleaning them.
What if water still pools at the bottom after I clean the filter?
Check that the lower filter is sitting completely flat and that the upper cage is twisted all the way in. If both are seated correctly, the drain hose may be kinked or blocked. Look behind the dishwasher to see if the hose is bent, and straighten it if needed. If the hose looks clear, the pump itself may need service.
Is it normal for the filter to have a slight smell?
A mild odor is normal, but a strong smell means bacteria is growing in trapped food. Clean the filter more often, and run a cleaning cycle with a commercial dishwasher cleaner once a month to kill bacteria in the whole machine. Make sure you are scraping dishes before loading them.
Do I need to replace the filter?
KitchenAid filters are designed to last the life of the dishwasher if cleaned regularly. You only need to replace them if the mesh tears, the plastic cracks, or the cage no longer twists in securely. Replacement filters are available from KitchenAid or appliance parts retailers.