Essential maintenance
How to Clean a Dishwasher Filter in 10 Minutes (Plus: When to Replace It)
A clogged filter is the single most common cause of poor wash performance, bad odors, and standing water in your dishwasher. This guide walks through filter removal, cleaning, inspection, and the signs that tell you it is time for a replacement — all in about 10 minutes.
At a glance
Time and difficulty
10 to 15 minutes
Basic maintenance · Every homeowner
Fast answer
Quick answer
Remove the bottom rack. Twist the cylindrical filter counterclockwise and lift it out. The flat mesh screen underneath lifts out next. Rinse both under hot running water, scrubbing the mesh with a soft brush. Wipe out the filter well with paper towels. Reassemble in reverse order. Do this monthly.
Why it matters
Why cleaning the dishwasher filter is not optional
Your dishwasher filter traps food particles, labels, bits of broken glass, and grease before they can reach the drain pump and clog it. It is doing its job every time you run a cycle. But unlike a sink strainer that you see and empty daily, the dishwasher filter is hidden under the bottom spray arm, out of sight. Most people never look at it until something goes wrong — standing water, bad smells, or dishes coming out dirty.
A full filter has three effects: it restricts water flow, reducing spray pressure throughout the machine; it holds decomposing food that produces odor; and it can allow debris to bypass the filter entirely and reach the drain pump, where it causes more expensive damage. A 10-minute monthly cleaning prevents all three.
Step by step
How to clean a dishwasher filter — step by step
- Pull out the bottom rack completely. Set it aside so you have clear access to the tub floor. If there is standing water in the bottom, scoop it out first with a cup — you need to see what you are doing.
- Locate the filter assembly. It is typically a round plastic cylinder about 3–4 inches in diameter, centered under the bottom spray arm. On most models, the spray arm hub sits on top of the filter. Some models have the filter offset to one side instead of centered — consult your owner manual if you do not see it immediately.
- Remove the upper cylindrical filter. Grasp the filter and turn it counterclockwise (left). It should rotate about a quarter turn and lift straight out. Do not force it — if it resists, check for a locking tab or a buildup of debris jamming the threads. Some models (notably older Whirlpool and KitchenAid units) have a secondary plastic locking ring that must be removed first.
- Remove the flat mesh screen. Below the cylindrical filter is a flat, circular mesh screen that catches finer particles. This lifts straight out — no twisting needed. Pay attention to its orientation; it usually has a tab or notch that aligns with a specific position in the sump.
- Clean both filter pieces under hot running water. Hold each piece under the hottest tap water you can tolerate. Use a soft brush — an old toothbrush or a bottle brush — to scrub the mesh surfaces. Pay special attention to the folds and crevices where sludge accumulates. Do not use soap; water and mechanical scrubbing are sufficient. If the mesh is heavily greased, a drop of dish soap on the brush is fine, but rinse it completely before reassembly.
- Wipe out the filter well. With the filter removed, you can see into the sump — a small basin that collects water before the drain pump. Use paper towels to wipe out any sludge, food particles, glass shards, or labels you find. A flashlight helps — the sump is dark. Be careful not to push debris deeper into the drain opening. Remove everything you can see and reach.
- Reassemble in reverse order. Place the flat mesh screen back first, aligning its tab with the notch. Then insert the cylindrical filter, pressing it down firmly and turning it clockwise (right) until it locks. It should sit flush and not wobble. Replace the bottom rack.
- Run a short rinse cycle to verify. This is optional but recommended after a heavy cleaning. The rinse cycle flushes any loosened debris through the drain path and confirms that everything is seated correctly — you should hear normal water flow with no rattling or unusual noise.
Brand differences
Brand-specific filter removal tips
Most models have a two-piece filter with a removable lower screen. Look for a plastic "cup" in the center that must be lifted out before the screen. Some models have a third piece — a coarse filter plate that snaps over the top. The spray arm must be removed first on many Whirlpool designs.
Bosch filtration is generally a single cylindrical unit with an integrated fine mesh. It unscrews easily but the mesh clogs faster than other brands because it is so fine. Clean monthly without exception on Bosch. The filter screen on Bosch models is delicate — use a soft brush only, never anything abrasive.
Most GE models use a simple twist-and-lift cylindrical filter. On some GE models, the entire sump cover must be removed by unscrewing four Torx screws around the perimeter to access the filter — a more involved process than other brands. Check your manual to confirm which design you have before attempting removal.
Korean-brand dishwashers often have the filter flush with the tub floor rather than protruding. Look for a circular outline rather than a raised cylinder. The removal mechanism is the same twist-and-lift motion, but the flush design makes it easier to miss visually.
When to replace
Signs your dishwasher filter needs replacement, not just cleaning
Filters are durable but not permanent. After years of heat, water pressure, and detergent exposure, the plastic and mesh degrade. Replace the filter if you notice any of these:
- The mesh has visible holes, tears, or thinning areas — debris will bypass the filter and damage the pump.
- The filter housing is cracked — even a hairline crack allows unfiltered water to reach the pump.
- The plastic has turned brittle, yellowed, or chalky — this is UV-like degradation from years of heated dry cycles.
- The filter no longer locks firmly into place, or wobbles after being seated — the locking tabs have worn down.
- You have scrubbed the mesh thoroughly and it still appears clogged or has a persistent film — the mesh pores may be permanently blocked by mineral scale.
Replacement filters cost $15–$40 for most common brands and are available from appliance parts retailers or directly from the manufacturer. The replacement process is identical to the cleaning process — remove the old one, drop the new one in.
Common mistakes
4 mistakes people make when cleaning a dishwasher filter
Questions readers ask
FAQ
- How often should I clean my dishwasher filter? Monthly for households running the dishwasher 4+ times per week. Every other month for lighter use. If you have hard water, cook with a lot of grease, or have pets (pet hair finds its way into dishwashers), monthly cleaning is the safer schedule.
- Do all dishwashers have a removable filter? Most dishwashers manufactured after 2010 have a removable filter. Some older models and a few current budget models use a hard-food disposer (a built-in grinder) instead of a filter. If your dishwasher makes a loud grinding noise during the drain cycle, it likely has a disposer rather than a filter. These still need periodic cleaning of the sump area even though the filter itself is not removable.
- Will cleaning the filter fix standing water in my dishwasher? Often, yes. A clogged filter is the most common single cause of standing water after a cycle. Clean the filter and the filter well, then run a test cycle. If water still stands, move to the drain hose and sink-side checks.
- Can I put the dishwasher filter in the regular dishwasher to clean it? This is a circular problem — you would be using a dirty dishwasher to clean its own filter. It is simpler, faster, and more effective to rinse it under hot running water and scrub with a brush.
- What if I cannot get the filter out because it is stuck? Debris can jam the threads. Fill the sump area with hot water and let it sit for 10 minutes to soften grease and sludge, then try again. If it is still stuck, pour a cup of white vinegar into the sump and wait 30 minutes — the acidity helps dissolve mineral deposits binding the threads. Do not use tools to force it; if it will not budge after soaking, call a technician to avoid cracking the sump.
References
Fact-check notes
- Filter removal procedures cross-checked against owner manuals from Whirlpool, Bosch, GE, KitchenAid, LG, and Samsung (2018–2025 model years).
- Filter replacement interval: Manufacturer maintenance schedules uniformly recommend inspecting the filter monthly and replacing it when physically damaged. There is no prescribed replacement interval in years, as filter lifespan depends on wash frequency, water hardness, and detergent type.
- Drain pump damage from unfiltered debris: Service data from appliance repair networks confirms that food particles bypassing a damaged or missing filter are the leading cause of drain pump impeller jams and premature pump failure.
- Mesh filter cleaning: Fine-mesh filters (like Bosch's) trap particles down to approximately 0.5mm. Brushing with a soft-bristle brush is sufficient to clear most clogs; chemical cleaners are not necessary and can accelerate plastic degradation.
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