How to Replace a KitchenAid Dishwasher Filter Assembly

KitchenAid dishwashers use a dual-component filter system as part of their Clean Water Wash technology. The upper cylindrical filter catches large food particles while the flat lower mesh filter traps fine debris. Unlike older hard-food disposer systems that grind particles, this passive filtration requires periodic cleaning and eventual replacement when the mesh becomes damaged or permanently stained with mineral deposits.

If you notice gritty residue on dishes, food particles redepositing on glassware, or the filter mesh is torn or warped, it is time to replace the assembly. This is one of the simplest maintenance tasks on a KitchenAid dishwasher and requires no tools. The part is the same across the Whirlpool platform, so Whirlpool-branded equivalents fit identically.

Before You Start

• Tools needed: None required (hand removal). Optional: soft brush for cleaning the housing
• Parts needed: Filter assembly W10872845 or equivalent (~$15-$35)
• Time required: 10 minutes
• Difficulty: Beginner
• Safety warning: No power disconnection required for filter replacement. The filters are inside the wash tub and accessible with the door open. However, if you plan to also clean the sump area beneath the filter, disconnect power at the breaker first as a precaution.

Understanding KitchenAid Filter Types

KitchenAid uses two filter designs depending on model year:

• 2015 and newer (KDTE/KDTM/KDFE): Triple-filtration Clean Water Wash with cylindrical upper filter and flat lower mesh. Quarter-turn removal, no tools needed
• Pre-2015 models: Some used a hard-food disposer (grinder) that does not have a removable filter. If your model has no visible filter in the tub floor, it uses the self-cleaning grinder system and does not need filter replacement

Check your model number prefix to confirm. KDTE, KDTM, KDFE, and KDFN all use the removable filter system.

Step-by-Step Instructions

Step 1: Empty the Dishwasher

Remove all dishes and racks if desired. You need clear access to the tub floor. The lower rack can stay in place but must be pushed to the back so you can reach the center filter assembly. Remove the lower spray arm if it obstructs access by pushing down on its center and rotating counterclockwise.

Step 2: Remove the Upper Cylindrical Filter

Grasp the cylindrical filter in the center of the tub floor. Rotate it counterclockwise approximately one quarter turn until it releases from the locked position. Lift it straight up and out. This filter catches large debris like food chunks, labels, and broken glass before they reach the pump.

Step 3: Remove the Lower Flat Mesh Filter

With the upper cylinder removed, you can now see and access the flat mesh filter that sits in a recessed frame around the sump opening. Lift one edge and slide it out. This filter is not locked in place and simply rests in a groove. Handle it carefully as old filters can become brittle.

Step 4: Inspect Both Filters for Damage

Hold each filter up to a light source. Look for tears, holes, warped mesh, or permanent discoloration that does not come clean with scrubbing. The lower mesh filter is the most common failure point because fine particles embed in it over time. If the mesh has any holes or tears, even small ones, it must be replaced because debris will pass through and damage the drain pump impeller.

Step 5: Clean the Filter Housing

Before installing new filters, wipe out the circular housing and the flat groove where the mesh filter sits. Remove any food debris, glass shards, or buildup from the sump opening. This is the area that feeds directly to the circulation pump and drain pump. A clean housing ensures the new filters seat properly and water flows without restriction.

Step 6: Install the New Lower Mesh Filter

Place the new flat mesh filter into the recessed groove. Make sure it sits flat and fully within the frame with no edges lifted or folded. The filter must lay completely flush. If it sits above the groove edge, it will not filter effectively and may be dislodged by spray arm water pressure during a cycle.

Step 7: Install the New Upper Cylinder Filter

Lower the cylindrical filter into the center opening. Align the tabs with the slots in the housing. Rotate clockwise until you feel it lock into place (quarter turn). Give it a gentle pull upward to confirm it is locked. If it lifts out, the tabs are not engaged. Realign and twist again until it clicks.

Step 8: Test with a Rinse Cycle

Replace the spray arm if removed. Close the door and run a rinse cycle. After completion, open the door and check the tub floor around the filter for any food particles that should have been caught. A properly seated filter assembly should result in completely clear water in the sump area.

Signs Your Filter Needs Replacement vs. Cleaning

Maintenance Tips to Extend Filter Life

• Scrape dishes before loading but do not pre-rinse. The ProWash cycle needs some soil to calibrate its sensor. Excessive pre-rinsing actually makes the cycle less effective
• Remove the filter weekly for a quick rinse under running water. This 10-second task prevents buildup from hardening
• Never use a hard brush or scouring pad on the mesh. The fine screen is delicate and scratches create weak points that tear over time
• Run the garbage disposal before starting the dishwasher. A backed-up disposal can cause drain water to push debris back into the tub

When to Call a Professional

• If dishes remain dirty after installing new filters, the circulation pump may be losing pressure. The pump uses the same sump design as Whirlpool and wears after 8-10 years of daily use
• Recurring F8E1 drain errors after filter replacement indicate a drain pump or drain path issue unrelated to filtration
• If water does not circulate at all (quiet during wash phase), the wash motor may have failed. This is a more involved repair requiring unit access from below

Cost Comparison: DIY vs Professional

Need Professional Help?

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FAQ

Q: How often should I replace my KitchenAid dishwasher filter? A: With weekly rinsing, the filter assembly lasts 2-4 years before the mesh degrades enough to need replacement. If you rarely clean it, mineral buildup and embedded grease can shorten life to 12-18 months. Replace immediately if you find any tears or holes.

Q: Can I use a Whirlpool filter in my KitchenAid dishwasher? A: Yes. KitchenAid and Whirlpool dishwashers share the same platform and filter assembly design. The Whirlpool equivalent part number fits identically. Look for W10872845 or the WP-prefixed version of the same number.

Q: Why are my dishes still dirty with a new filter? A: A new filter only fixes issues caused by debris recirculation. If dishes are still dirty, check spray arm holes for clogs, verify water temperature is at least 120F at the tap, and ensure the ProWash cycle is not being interrupted. Also confirm the filter is properly locked (quarter-turn click).

Q: My KitchenAid dishwasher does not have a removable filter. Is that normal? A: Older KitchenAid models (pre-2015) used a hard-food disposer system with an integrated grinder instead of removable filters. These self-cleaning systems do not require filter replacement. If you hear a grinding sound during cycles, you have this type.

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