Kenmore Dishwasher Filter Replacement Guide — Cost, Signs & DIY Tips

Kenmore dishwasher filters differ dramatically depending on which OEM actually built your machine. Whirlpool-manufactured Kenmore dishwashers (665-prefix) use a triple-filter system with an upper filter assembly and a lower fine-mesh filter that twists into place. LG-built Kenmore Elite models (722-prefix) use a flat mesh filter that lifts straight out with a center handle. The filter type determines how often it needs cleaning, how it is removed, and whether you need a replacement filter or just a thorough cleaning.

Decode Your Model Number

The first three digits of your Kenmore model number tell you the filter design:

• 665 — Whirlpool: Triple-filter system. Upper filter lifts out, lower filter twists counterclockwise to remove. Self-cleaning models (older 665 units) have a hard food disposer instead — no user-serviceable filter.
• 722 — LG (Kenmore Elite): Flat mesh filter with center handle. Lifts straight out, no twisting.
• 587 — Frigidaire: Flat mesh filter at the bottom, lifts out with center handle.
• 630 — Samsung: Multi-layer filter with twist-lock.

This distinction matters because the Whirlpool triple-filter design has replaceable components (the fine mesh lower filter wears out), while the LG flat mesh filter rarely needs outright replacement — just regular cleaning.

Signs Your Kenmore Dishwasher Filter Needs Replacement (or Deep Cleaning)

Signs that indicate the filter needs cleaning (not replacement):

• Food particles redepositing on clean dishes
• Slow draining at the end of cycles
• Unpleasant odor coming from the dishwasher
• Visible debris accumulated on the filter mesh

Signs the filter actually needs replacement:

• Holes, tears, or cracks in the filter mesh — debris passes straight through to the drain pump
• The filter frame is warped or cracked and no longer seats flush in its housing
• The twist-lock mechanism (Whirlpool 665-prefix) is stripped — the filter spins freely without locking
• Persistent gritty residue on dishes despite thorough filter cleaning — the fine mesh has degraded

Many Kenmore dishwasher owners replace filters unnecessarily when a proper cleaning would solve the problem. Before ordering a new filter, remove it, clean it with warm water and a soft brush, and run a test cycle. If food particles still pass through, the mesh is compromised and replacement is warranted.

Filter Cost Breakdown

This is the most cost-effective dishwasher repair you will encounter. The filter itself is inexpensive, and replacement is a true beginner-level job with no tools required beyond your hands.

How to Replace the Filter

Whirlpool-based models (665-prefix) — triple-filter system:

1. Remove the lower dish rack to access the tub floor
2. Pull up the upper filter assembly — it lifts straight out
3. Turn the lower fine-mesh filter counterclockwise (about a quarter turn) and lift it out
4. Clean both filters under warm running water with a soft brush. For stubborn deposits, soak in warm water with a tablespoon of baking soda for 15 minutes
5. If replacing: match the new filter to the old one. Whirlpool uses model-specific filters (common part: W10872845). Order the Whirlpool part number, not the Kenmore-branded equivalent, for 30–40% savings.
6. Install the lower filter first — align the arrows, twist clockwise until it locks
7. Drop the upper filter assembly into its housing — it seats by gravity
8. Replace the lower rack and run a short rinse cycle to verify proper drainage

LG-based models (722-prefix Kenmore Elite) — flat mesh filter:

1. Remove the lower rack
2. Grasp the center handle and pull the filter straight up
3. Clean under warm running water. Use a soft toothbrush for the fine mesh areas
4. If replacing: the LG filter is a single-piece assembly. Drop the new one in — it seats by gravity with no twist-lock
5. Run a short cycle to verify

Tools required: None for filter removal. A soft brush or old toothbrush for cleaning. That is it — this is a true no-tool repair.

When to DIY vs. Call a Professional

Filter replacement or cleaning is always a DIY job. There is no scenario where calling a professional makes sense for just the filter — it requires no tools, no disassembly, and no electrical work. The entire process takes 5–10 minutes.

Call a professional only if: the filter area reveals a cracked or damaged sump housing underneath, or if cleaning/replacing the filter does not resolve drainage or food-redeposition issues (the problem is likely the drain pump or spray arm).

How Long Does a Kenmore Dishwasher Filter Last?

• Whirlpool triple-filter (665-prefix): The upper filter lasts the life of the dishwasher with regular cleaning. The fine mesh lower filter typically needs replacement every 3–5 years, depending on use. Homes that pre-scrape plates heavily see filter life at the top of this range.
• LG flat mesh filter (722-prefix): 5–8 years or longer with monthly cleaning. The single-piece design is durable but the mesh eventually develops micro-tears that let fine particles through.

Cleaning frequency: Monthly for average use. Weekly if running the dishwasher daily with minimal pre-scraping.

Maintenance Tips to Extend Filter Life

• Clean the filter monthly — this alone prevents 80% of filter-related issues
• Scrape plates before loading. You do not need to pre-rinse, but bones, olive pits, toothpicks, and large food chunks should never enter the tub
• Run a vinegar cleaning cycle monthly (2 cups of white vinegar in an empty dishwasher on the hottest cycle) to dissolve grease that clogs the fine mesh
• Inspect the filter gasket (where it seats in the sump) for debris that prevents proper sealing
• Never clean the filter with abrasive scrubbers or steel wool — these damage the fine mesh and create holes

Decode Your Kenmore Dishwasher Model Number

Every Kenmore repair starts with identifying the OEM manufacturer from the first three digits of your model number:

• 665 — Whirlpool (most common for Kenmore dishwashers 2000-2020). Uses Whirlpool W10/WP part numbers. Diagnostic mode: press three buttons in sequence within 5 seconds.
• 587 — Frigidaire/Electrolux. Uses Frigidaire-specific parts. Diagnostic: hold Start and Cancel simultaneously.
• 630 — Samsung (newer models). Samsung-specific parts and diagnostics.
• 722 — LG (Kenmore Elite). Uses LG part numbers (EBR prefix). Diagnostic: press Power then Start within 3 seconds.

This decode determines which parts fit your machine, which diagnostic procedures to use, and where to find the best prices. The Kenmore label on the front means nothing for parts sourcing — always reference the OEM part number.

Cost-saving strategy: Once you know the OEM manufacturer, search for the Whirlpool or LG OEM part number directly instead of the Kenmore-branded equivalent. The identical part under the OEM brand name typically costs 30-40% less.

Common Kenmore Dishwasher Error Codes by Platform

Whirlpool-based (665-prefix): F-number/E-number system. F1 E1 (control board), F2 E2 (stuck button), F5 E1/E2 (door switch), F6 E1-E4 (communication), F8 E1 (water inlet), F9 E1 (drain).

LG-based (722-prefix Kenmore Elite): LE/IE (motor/inlet), OE (drain), HE (heater), tE (thermistor), FE (overfill).

Knowing your platform's error codes helps diagnose the failing component before ordering parts.

FAQ

How often should I clean my Kenmore dishwasher filter?

Monthly for average household use. If you run the dishwasher daily with minimal plate scraping, clean it weekly. The filter is accessible without tools — it takes under 2 minutes to pull, rinse, and reinstall.

How much does a Kenmore Dishwasher Filter cost?

DIY replacement costs $10–$45. Professional installation is $50–$150 but unnecessary — this is a no-tool, 5-minute job. Order the Whirlpool or LG OEM part number instead of the Kenmore label to save 30–40%.

How do I know if my Kenmore dishwasher filter needs replacement or just cleaning?

Clean it first. If food particles still redeposit on dishes after a thorough cleaning, inspect the mesh for holes or tears. A torn mesh means replacement. A clean, intact mesh that still allows particles through means the mesh has degraded at a microscopic level — time for a new one.

Does my Kenmore dishwasher have a filter or a self-cleaning disposer?

Older 665-prefix Kenmore dishwashers (pre-2010) often had a hard food disposer that ground debris — no user-serviceable filter. Newer models switched to manual-clean filters. Check your tub floor: if you see a removable filter assembly, you have a manual-clean system. If you see a solid sump cover, you likely have a disposer.

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