How to Clean a Dishwasher Filter

Quick answer: If your dishwasher has a homeowner-removable filter, cleaning it usually takes about 10–20 minutes: remove the lower rack, unlock and lift out the filter exactly as your owner's manual shows, rinse it under warm running water, gently brush away stuck-on debris with a soft brush, and reinstall it securely before running the dishwasher. Do not force a filter that will not release, and do not run the dishwasher with a removable filter left out.

The part that confuses many homeowners is frequency. There is no single cleaning schedule for every dishwasher. Whirlpool and Maytag recommend monthly cleaning for many removable-filter systems and more often with heavy use, while Bosch recommends cleaning its filters every few months. Some dishwashers use maintenance-free or non-removable filtration instead. Your exact model's manual is therefore the final authority.

First, make sure your dishwasher actually has a removable filter

Most removable dishwasher filters are located at the bottom of the tub, beneath the lower rack and near the lower spray arm. Depending on the model, you may see a round or cylindrical upper filter, a flat lower screen, or a multi-piece assembly.

But not every dishwasher is designed the same way. Some models use a filter that the homeowner removes and washes. Others use a maintenance-free filtration system, a foreign-object cup, or a filter that is not intended to be routinely removed.

Before taking anything apart:

1. Find the dishwasher's model number, usually on a label around the door or tub opening.
2. Look up the owner's or use-and-care manual for that exact model.
3. Find the section for the filter, filtration system, cleaning, or routine maintenance.
4. Confirm that the filter is listed as homeowner-removable and note the exact unlocking direction.

Do not copy the removal motion from a similar-looking dishwasher online. A quarter-turn that is correct for one model may be wrong for another. If the part does not move the way the manual describes, stop rather than twisting harder.

What you need

For a typical removable filter, the supplies are simple:

• warm running water;
• a sink or basin;
• a soft-bristled brush, soft toothbrush, sponge, or cloth if the manufacturer permits it;
• a towel for drips; and
• the owner's manual for your exact model.

You usually do not need aggressive chemicals. Whirlpool specifically warns against wire brushes and scouring pads because they can damage filter material. Bosch recommends mild soap and a soft brush for its removable filters. Unless your manual specifically says otherwise, avoid abrasive pads, sharp tools, and harsh cleaners on the filter.

How to clean a removable dishwasher filter

The exact locking mechanism varies, but the general process for a documented removable filter is:

1. Stop the dishwasher and let it cool. Do not reach into the bottom of a machine that has just completed a hot cycle.
2. Remove the lower rack. This exposes the bottom of the dishwasher tub.
3. Look for sharp debris before using your hands. Broken glass, bones, toothpicks, or other objects may be sitting around the filter area.
4. Unlock the filter exactly as the manual shows. Many models use a twist-and-lift motion, but the direction and number of pieces vary.
5. Lift out only the parts identified as user-removable. Do not start removing pump covers, wiring, fasteners, or plumbing parts unless the owner's manual specifically describes that work as routine owner maintenance.
6. Rinse loose food and debris under warm running water.
7. Use a soft brush for material that does not rinse away. Work gently around mesh or screens so they are not torn or distorted.
8. Inspect the filter. Look for cracks, torn mesh, warping, missing pieces, or a damaged locking tab.
9. Reinstall every filter component in the correct orientation.
10. Lock the assembly completely. Whirlpool warns that a filter that still turns freely may not be locked in place.
11. Return the lower rack and run the dishwasher normally.

If the filter will not seat or lock the way it did before cleaning, do not simply run the dishwasher and hope it is close enough. Remove it, compare the assembly with the manual, and reinstall it correctly. A loose or incorrectly installed filter can allow debris to circulate and may contribute to dishwasher problems.

How often should you clean a dishwasher filter?

Use your model's manual first. Manufacturer recommendations differ enough that a universal “every 30 days” rule would be misleading.

The useful goal is not to memorize an arbitrary number. It is to keep the filter clear enough that food debris is not being recirculated and water can move through the dishwasher as designed.

Signs the dishwasher filter needs cleaning now

Even if the next scheduled cleaning is weeks away, inspect the filter when you notice:

• food particles left on dishes after a cycle;
• grit or a sandy feeling on supposedly clean dishes;
• visible food or debris on the filter;
• a new unpleasant odor;
• cleaning performance that has noticeably declined;
• a model-specific filter or drainage warning; or
• debris collecting around the bottom of the tub.

Whirlpool, Maytag, and KitchenAid all identify visible soil, odors, gritty dishes, or declining cleaning performance as reasons to check and clean removable filters.

Should you rinse dishes before loading them?

For many modern dishwashers, you do not need to hand-wash dishes before loading them. Whirlpool's current guidance says to scrape off large food particles rather than washing dishes clean before they go into the machine.

That distinction matters for filter care. Large pieces such as bones, fruit pits, labels, toothpicks, broken glass, and other foreign objects should not be deliberately sent into the filtration system. Scrape or remove those items before loading.

Follow your dishwasher and detergent instructions for your specific machine. Cleaning the filter more often is not a substitute for correct loading, proper detergent, unobstructed spray arms, and a dishwasher that drains correctly.

What if your dishwasher does not have a removable filter?

Do not try to turn a non-removable filtration system into a removable one. Whirlpool documents some dishwasher systems as maintenance-free, and Samsung likewise has models whose filters are not homeowner-removable.

For those machines, the manufacturer may instead instruct you to:

• remove accessible debris from the bottom of the tub;
• wipe the drain area;
• clean a foreign-object cup or similar accessible component;
• run a specified cleaning cycle; or
• perform other model-specific care.

If your owner's manual does not tell you to remove a particular part, do not pry it out because another brand's video shows a removable filter in the same general location.

Can you clean the dishwasher filter with soap?

It depends on the manufacturer. Bosch recommends warm, soapy water and a soft brush for its filters. Whirlpool's removable-filter instructions emphasize rinsing under running water and using a soft brush when needed.

The safest approach is simple: use the method stated in your manual. If plain running water removes the soil, additional products may not be necessary.

Can you use vinegar or baking soda on the filter?

Do not assume that a popular household cleaning mixture is appropriate for a dishwasher part. Filter materials, seals, finishes, and manufacturer instructions vary.

Use warm water, mild soap when approved, and the cleaning method specified for your machine. Never mix household cleaning chemicals. If the filter has mineral buildup that ordinary cleaning will not remove, check the manufacturer's descaling guidance rather than experimenting with stronger products.

Can you put the dishwasher filter in the dishwasher?

Unless your manual explicitly says the filter is dishwasher-safe, clean it by hand. Putting the filter through a wash cycle while it is removed defeats its normal role in the filtration system and may expose it to conditions the manufacturer did not intend.

What if there is broken glass near the filter?

Stop before reaching around blindly. Small glass fragments can settle in the bottom of the tub or around filter and pump areas where they are difficult to see.

If pieces are clearly visible and safely reachable using the method described by the manufacturer, remove them cautiously without using bare hands. If glass may have entered an inaccessible pump or drain area, or the manual does not describe safe owner access, arrange professional appliance service.

What if the dishwasher still smells after you clean the filter?

A dirty filter is only one possible source of odor. If the filter is clean and correctly installed, check the owner's manual for other homeowner-maintenance areas such as:

• food trapped around the tub or door area;
• debris in accessible spray-arm openings;
• a cleaning cycle recommended by the manufacturer;
• an interrupted cycle that left dirty water sitting in the machine; or
• a drainage issue.

If the odor resembles burning plastic, overheated wiring, or another electrical problem rather than stale food, stop using the dishwasher and arrange qualified service.

What if there is standing water in the bottom?

A small amount of water may be normal in some dishwasher designs, while a tub that remains substantially full after a completed cycle can indicate a drainage problem. The filter may be involved, but it is not the only possibility.

After confirming that the removable filter is clean and properly installed, use the model-specific troubleshooting instructions. Depending on the dishwasher and installation, causes can include an obstructed drain path, sink/disposal connection issue, kinked hose, pump obstruction, or another appliance fault.

Do not pour chemical drain opener into the dishwasher unless the appliance manufacturer explicitly instructs you to do so. Stop using the machine and obtain service if it leaks onto the floor, repeatedly shows drain or electrical errors, trips a breaker or protective device, smells burned, or requires access beyond documented homeowner maintenance.

Should you replace a dishwasher filter instead of cleaning it?

A reusable filter is normally cleaned rather than replaced on a routine calendar. Replacement makes sense when the filter is:

• cracked or broken;
• warped so it no longer seats correctly;
• missing part of its mesh or screen;
• damaged around the locking mechanism; or
• identified by the manufacturer as needing replacement.

Use the exact dishwasher model number to identify a compatible replacement part. A filter that merely looks similar may not fit or lock correctly.

Why does my dishwasher filter get dirty so quickly?

Fast buildup does not automatically mean the dishwasher is defective. It can result from:

• running the dishwasher every day or multiple times a day;
• loading dishes with large amounts of loose food debris;
• a household that cooks frequently;
• sticky or starchy foods collecting in the filtration area; or
• a cleaning interval that is simply too long for your usage pattern.

If the filter becomes heavily clogged again immediately after cleaning, or cleaning performance remains poor despite correct loading and maintenance, consult the model troubleshooting guide or a qualified appliance technician rather than endlessly shortening the cleaning interval.

First-time homeowner tip: clean it once when you move in

If you bought a home with an existing dishwasher and do not know its maintenance history, the filter is worth checking early—provided the manual confirms it is user-removable.

While you are there, record:

• the dishwasher manufacturer;
• model and serial number;
• the manual link;
• the filter type;
• the cleaning procedure; and
• a reasonable next inspection date.

That five-minute record prevents you from having to rediscover the model and instructions the next time dishes start feeling gritty.

Common questions

Where is the dishwasher filter?

On many dishwashers with removable filters, it is at the bottom of the tub underneath the lower rack, often around the base of the lower spray arm or toward a rear corner. Your manual will show the exact location.

Why won't my dishwasher filter come out?

First confirm that it is actually designed to come out. If it is removable, compare your motion with the manual; many filters twist before lifting. If it still does not release normally, do not force it. A damaged locking tab or wrong removal direction can turn a simple cleaning job into a repair.

Can I run the dishwasher without the filter?

Not when the dishwasher is designed to operate with a removable filter installed. Whirlpool specifically warns against running its removable-filtration dishwashers without the filters properly installed. Reinstall and lock the assembly before starting a cycle.

Does a dirty filter make dishes smell?

It can contribute. Food particles trapped in the filtration area can create odor and may also be recirculated. But persistent odor after the filter is clean can come from other areas of the dishwasher or drainage system.

Will cleaning the filter fix a dishwasher that is not draining?

Only if the filter or accessible debris is actually causing the restriction. A dishwasher that still will not drain after basic model-approved cleaning needs further troubleshooting. Do not disassemble pumps, wiring, or plumbing simply because the filter was not the answer.

The simple rule to remember

• Find the model number and manual before removing the filter.
• Confirm that the filter is intended to be homeowner-removable.
• Rinse it with warm water and use only a soft brush or mild soap when the manufacturer permits it.
• Never force the filter, scrub it with abrasive tools, or run the dishwasher with a required filter left out.
• Follow the model-specific schedule; manufacturer guidance ranges from roughly monthly to every few months for common removable systems.
• Clean sooner when dishes become gritty, food remains after washing, odors appear, or visible debris accumulates.
• If cleaning does not solve drainage, odor, or performance problems, troubleshoot the underlying issue rather than repeatedly cleaning the filter.

For a first-time homeowner, dishwasher-filter cleaning is a good example of how home maintenance should work: identify the exact equipment you own, follow its manufacturer instructions, establish a simple routine, and pay attention when the appliance behaves differently from normal.