The filter is at the bottom of the tub, under the lower spray arm

The filter on a KitchenAid dishwasher sits at the bottom center of the wash tub, directly beneath the lower spray arm. It looks like a cylindrical cage, usually white or gray plastic, and it catches food particles and debris during the wash cycle. You access it by opening the door, removing the lower rack, and lifting or unscrewing the spray arm — the filter sits right underneath.

Most KitchenAid models use one of two filter designs: a removable cylindrical filter that lifts straight out, or a filter assembly that requires a quarter-turn counterclockwise to release. The exact mechanism depends on your model year and series, but both are located in the same spot at the tub floor.

Knowing where the filter is matters because a clogged filter reduces wash performance and can cause water to pool at the bottom of the tub. Cleaning it takes less than five minutes and should happen every month or two, depending on how often you run the dishwasher and what you load into it.

Key Takeaways

  • The filter is a cylindrical cage at the very bottom center of the wash tub, directly under the lower spray arm.
  • You must remove the lower rack and lift or unscrew the lower spray arm to reach the filter.
  • Most filters either lift straight out or twist counterclockwise to release, depending on your model.
  • Rinse the filter under running water monthly to remove trapped food and debris.
  • A blocked filter causes poor wash results and standing water at the tub bottom.

How to access the filter step by step

Start by opening the dishwasher door fully and pulling out the lower rack completely. Set it aside where it will not tip. Next, locate the lower spray arm — it is the rotating arm that sprays water upward from the tub floor. On most KitchenAid models, this arm either pulls straight up or twists counterclockwise. Check your model's manual or try pulling gently first; if it does not budge, try the twist motion instead.

Once the spray arm is removed, you will see the filter directly below where it was mounted. If your model has a cylindrical filter with a handle or knob on top, straightforward lift it straight up and out. If your filter has a collar or threaded ring around the base, grip that ring and turn it counterclockwise until it releases. Some models have both a removable filter cage and a separate fine-mesh filter underneath — if you see two layers, remove the outer cage first, then lift out the inner filter.

After you remove the filter, look at the filter well (the hole where it sat). You may see a small amount of standing water or debris. Wipe this area with a damp cloth or paper towel before reinstalling the filter, as trapped water can cause odors.

Cleaning the filter properly

Hold the filter under warm running water and rinse it from all angles. Use your fingers or a soft brush to gently loosen any stuck-on food, grease, or mineral deposits. Do not use a dishwasher or high-pressure spray, as these can damage the fine mesh. If the filter has stubborn buildup, soak it in warm water with a small amount of white vinegar for 15 to 20 minutes, then rinse again.

For filters with both a coarse cage and a fine mesh layer, clean both separately. The outer cage usually needs only a quick rinse, while the inner mesh may trap finer particles and benefit from the vinegar soak. Once clean and dry, reinstall the filter by reversing the removal steps: place it in the well, twist clockwise if it has a collar, or straightforward press down if it lifts straight in. Reattach the spray arm, then slide the lower rack back in.

If you notice the filter is cracked, warped, or has holes in the mesh, it needs replacement. A damaged filter will not trap debris effectively and can allow particles to recirculate during the wash. Replacement filters are sold through KitchenAid parts suppliers and typically cost between $20 and $50, depending on your model.

When to clean the filter and warning signs

Check and rinse the filter every four to eight weeks if you run your dishwasher regularly. If you load heavily or rinse dishes poorly before loading, clean it monthly. The filter does its job silently, so you will not hear it clog — instead, you will notice signs in how the dishwasher performs.

A blocked filter causes water to pool at the bottom of the tub after the cycle ends, dishes to come out with food residue still on them, or a musty smell inside the tub. If you see any of these signs, the filter is almost certainly the culprit. Cleaning it usually solves the problem within one or two wash cycles. If standing water persists after you clean the filter, the drain pump or drain line may be blocked instead, which is a separate issue.

Differences between KitchenAid filter types

KitchenAid has used several filter designs over the years. Older models (pre-2010) often have a straightforward cylindrical cage that lifts straight out with no twisting required. Mid-range models (2010–2018) typically use a cage-and-mesh combination with a twist-release collar. Newer models (2018 and later) sometimes feature a single integrated filter that combines both functions in one piece.

To find out which type you have, check the model number on your dishwasher — it is usually on a sticker inside the door edge or on the side wall of the tub. You can then search that model number on the KitchenAid website or your manual to see a diagram of the filter assembly. If you do not have the manual, many are available as free PDFs online by searching "[Your Model Number] manual."

Preventing filter clogs

The best way to keep the filter clean is to rinse dishes before loading them. You do not need to wash them thoroughly — a quick rinse under the tap removes most loose food, which is what clogs filters fastest. Scrape plates into the trash rather than letting food sit on them while they wait to be loaded.

Avoid loading items with a lot of debris, such as pasta strainers still holding pasta water or pots with dried-on food. If you are washing something particularly dirty, run a rinse cycle first or hand-wash it. These small habits extend the time between filter cleanings and keep your dishwasher running efficiently.

Frequently Asked Questions

Do I need to remove the filter to run the dishwasher?

No. The filter is designed to stay in place during every wash cycle. Removing it is only for cleaning. Running the dishwasher without the filter will cause food and debris to circulate freely and clog the drain pump, which is much more expensive to repair than a clogged filter.

What if I cannot get the filter out?

If the filter is stuck, do not force it — you may crack the plastic. Soak the area with warm water for a few minutes to soften any mineral deposits or dried food, then try again. If it still will not budge, check your manual to confirm you are turning it the correct direction. Some models twist clockwise, not counterclockwise.

Can I put the filter in the dishwasher to clean it?

No. The high heat and spray pressure of the dishwasher can warp or damage the filter mesh. Always rinse it by hand under warm running water. If it needs a deeper clean, soak it in vinegar and water, then rinse thoroughly.

How do I know if my filter needs replacement?

If the mesh has visible holes, tears, or permanent discoloration that does not rinse away, or if the plastic frame is cracked or warped, the filter should be replaced. A damaged filter cannot trap debris and will cause the same problems as a clogged one.

Is the filter the same on all KitchenAid models?

No. Different model lines and years use different filter designs and sizes. Always check your manual or model number before ordering a replacement. Installing the wrong filter will not fit properly and may not work at all.