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

Your KitchenAid dishwasher has a removable filter assembly sitting on the floor of the tub, directly beneath the lower spray arm. It looks like a cylindrical cage with a fine mesh screen wrapped around it. On most KitchenAid models, you access it by lifting out the lower rack, then twisting the filter counterclockwise to release it. The exact location and removal method can vary slightly between model years, so check your owner's manual for your specific serial number if the counterclockwise twist does not work.

The filter traps food particles and debris so they do not recirculate onto your dishes or clog the spray arm holes. Over time, it collects buildup that reduces water flow and cleaning power. Cleaning it regularly—roughly once a month, or more often if you rinse dishes heavily—keeps your dishwasher running efficiently and prevents odors.

Key Takeaways

  • The filter sits at the bottom center of the tub under the lower spray arm and twists out counterclockwise on most KitchenAid models.
  • You must remove the lower rack first to reach the filter; it will not come out with the rack in place.
  • Rinse the filter under running water and use a soft brush to remove trapped food and mineral deposits every month.
  • If the filter is cracked, discolored, or does not twist out easily, your owner's manual has the exact procedure for your model year.

How to remove the filter from your KitchenAid

Start by running an empty cycle or letting the tub drain completely—you do not want standing water when you open the door. Pull out the lower rack by gripping both sides and sliding it toward you until it stops, then lift it out of the tub entirely.

Look at the bottom center of the tub. You will see a cylindrical filter cage with a handle or knob on top. Grip the handle firmly and turn it counterclockwise (left) about a quarter turn. The filter should lift straight up and out. If it feels stuck, do not force it—soak the tub with hot water for a few minutes to soften any mineral buildup, then try again.

Some older KitchenAid models have a different design: a flat, cartridge-style filter that slides out rather than twists. If your filter does not have a clear twist handle or if twisting does not work, consult your owner's manual by model number. You can find the model number on a sticker inside the door frame or on the side wall of the tub.

Cleaning the filter properly

Hold the filter under warm running water and rinse away loose food particles. Use your fingers or a soft brush—an old toothbrush works well—to gently scrub the mesh screen on all sides. Pay attention to the underside, where debris often collects. If you see white or tan mineral deposits, soak the filter in equal parts white vinegar and water for 15 to 20 minutes, then brush again.

Do not use a hard-bristled brush or scrub pad, as these can tear the fine mesh and reduce the filter's effectiveness. If the mesh is already torn or the plastic frame is cracked, the filter needs to be replaced—a damaged filter lets food particles through, which can damage the pump or spray arm.

Once clean, rinse the filter one more time under running water to remove any vinegar or debris, then set it aside to air-dry while you clean the filter housing.

Cleaning the filter housing and spray arm

While the filter is out, take a moment to clean the housing—the cup-shaped area where the filter sits. Use a damp cloth or soft brush to wipe away any sludge or mineral deposits on the walls and floor of the housing. This prevents buildup from interfering with the filter seal when you reinstall it.

Check the lower spray arm while you are down there. It is the rotating arm with small holes that sprays water upward during the wash cycle. If the holes look clogged with white mineral deposits or food particles, use a straightened paperclip or a small pipe cleaner to poke through each hole gently. Rinse the arm under running water to flush out loosened debris.

Reinstalling the filter

Once the filter is dry and the housing is clean, lower the filter back into the tub, aligning it with the housing. Push it down gently until it sits flush, then turn the handle clockwise (right) about a quarter turn until you feel it catch and lock. It should be snug but not so tight that you strain to turn it—hand-tight is correct.

Slide the lower rack back into the tub, making sure it sits evenly on both sides. Close the door and run a short rinse cycle to confirm everything is working. You should hear the spray arm rotating freely and feel water pressure when you hold your hand under the lower spray arm.

Signs your filter needs attention or replacement

If your dishes come out cloudy, spotted, or with food residue, the filter may be clogged or damaged. A foul smell coming from the dishwasher is another sign that food is trapped in or around the filter. If you clean the filter and the problem persists, the issue may be elsewhere—a clogged spray arm, a blocked drain, or a faulty pump—and you should call a KitchenAid service technician.

If the filter frame is cracked, the mesh is torn, or the plastic is discolored or warped, it cannot be repaired and must be replaced. KitchenAid sells replacement filters by model number; you can order one through their website or through an appliance parts retailer. Installation is the same as removal: twist out the old filter, twist in the new one.

Frequently Asked Questions

How often should I clean the filter?

Clean it once a month as routine maintenance. If you use the dishwasher daily or rinse dishes heavily before loading, clean it every two weeks. If you notice food buildup, odors, or reduced water pressure, clean it when ready regardless of the schedule.

Can I run the dishwasher without the filter?

No. The filter prevents food particles from recirculating and damaging the pump and spray arm. Running the dishwasher without it will cause clogs and reduce cleaning performance within a few cycles.

What if the filter is stuck and will not twist out?

Fill the tub with hot water and let it sit for 15 to 20 minutes to soften mineral deposits. Try twisting again with a firm grip. If it still will not budge, stop and contact a service technician—forcing it may break the filter or the housing.

Is the filter the same on all KitchenAid dishwashers?

No. Different model years and series have different filter designs. Some twist, some slide, and some are cartridge-style. Check your owner's manual by model number to confirm the exact removal method for your dishwasher.

Can I wash the filter in the dishwasher?

No. The heat and water pressure can damage the mesh and plastic. Always hand-wash the filter under running water with a soft brush.