If your washing machine is draining slowly or smells musty, cleaning the drain filter is a good first fix. In many front-load washers, and on some top-load models, that filter catches lint, coins, hair, and small debris before it reaches the pump. The safe approach is to shut the machine off, drain any leftover water in a controlled way, then clean the filter and housing gently so you do not damage the seal or threads.
Before you start: what you need and where the filter usually is
- A shallow tray or baking pan
- A stack of towels
- A small brush, such as an old toothbrush
- A cup or bowl, if your washer drains slowly
- Gloves, if the filter is slimy or packed with lint
- A flashlight so you can see inside the opening
On many front-load washers, the drain filter sits behind a small access panel near the bottom front corner of the machine. Some top-load washers have a similar service panel at the lower front or back edge, while others hide the filter inside the drain pump area. If you do not see an obvious round cap or twist-out plug, check the washer manual or look for a small door near the base. The part is usually low on the cabinet because that is where the pump and drain assembly live.
Before you open anything, make sure the machine is off and unplugged. If the hot and cold water valves are easy to reach, shut those off too. That is usually enough for a filter cleaning, since you are not opening the water supply lines, but it gives you extra peace of mind.
Shut off the washer and get the leftover water under control
- Turn the washer off and unplug it before opening any panel.
- If the hot and cold water valves are easy to reach, shut those off too. That is usually enough for a filter cleaning, since you are not opening the water supply lines, but it gives you extra peace of mind.
- Open the lower access panel or front flap slowly.
- Place towels on the floor in front of the washer and set your tray where the filter cap will come out.
- If your washer has a drain hose for emergency emptying, use it first according to the machine’s layout.
- If not, be ready to catch water as soon as the filter starts to loosen.
Remove the filter slowly and catch the water
- Turn the filter cap or plug a little at a time, not all at once.
- As soon as you hear water moving or see it start to seep out, pause and let the tray or towels take the spill.
- If water starts flowing faster than your tray can handle, tighten the filter back in place for a moment and swap in fresh towels or empty the tray.
- Continue loosening it gradually until the water stops.
- Remove the filter by hand.
- Pull it straight out if the design allows it, and avoid yanking or twisting against resistance. If it feels stuck, back it out and try again with steady pressure rather than force.
Clean the lint, coins, hair, and sludge from the filter
Rinse the filter under warm water and work off the loose buildup with your fingers. Coins, buttons, hair, pet fur, and wet lint are common here, and they often collect into a thick paste. A soft brush can help with the mesh and grooves, but use light pressure only.
Do not bend the plastic housing or scrape the filter with a knife or metal tool. A cracked filter can leak, and a warped seal may not seat properly when you reinstall it. If the filter has a removable cap, gasket, or screen, keep those parts together so they go back in the same order. When the water runs clear and the part feels clean to the touch, set it aside while you check the opening.
Check the pump housing and seal before putting it back
Use a flashlight to look into the filter opening. Remove any visible lint, hair, coins, or broken pieces sitting in the pump housing, but do not reach deep into the area if you cannot clearly see what you are touching. A long cotton swab or soft brush can help with the lip of the opening, where debris often hides.
Check the filter threads and the rubber seal or O-ring for cracks, flat spots, or stretching. If the threads look chewed up, the cap may not tighten evenly. If the seal looks worn, hardened, or missing, the washer can drip after reassembly. Clean the mating surface so no grit gets trapped between the filter and the housing. Even a small bit of sand or sludge can keep the cap from sealing fully.
Put it back and test for leaks
Thread the filter back in by hand first. It should turn smoothly and sit flush without cross-threading. Tighten it until it is secure, but do not crank it down harder than needed. Over-tightening can damage the threads or make the next cleaning difficult.
Close the access panel, plug the washer back in, and run a short drain or rinse cycle if your machine has one. Watch the area around the filter, the front edge of the machine, and the floor beneath it for drips. If you see moisture, stop the cycle and check whether the cap is seated properly. A dry floor and no signs of seepage usually mean the filter is back in correctly.
When cleaning is not enough
If the filter fills up again very quickly, the problem may be larger than a simple buildup. Repeated clogging can point to heavy lint shedding from fabrics, a damaged filter screen, or debris farther down in the pump or drain hose. If the filter cap will not latch, will not thread in smoothly, or feels loose after tightening, the part may need replacement.
Watch for draining that is still slow after the filter is clean, gurgling noises that do not go away, or water left in the drum after a cycle. Those signs can mean the pump is blocked or failing, or the drain hose is partly clogged or kinked. If the washer leaks from the filter area after you clean and reinstall it, the seal may be worn rather than the filter itself being dirty.
How often to clean it and how to keep it from clogging again
For most households, checking the drain filter every few months is a sensible habit. If you wash pet blankets, lint-heavy towels, rugs, or work clothes, you may want to clean it more often. If the washer starts to smell musty or drains more slowly than usual, do not wait for the next schedule you had in mind.
A few small habits help a lot: empty pockets before washing, shake out heavy lint from towels and blankets, and avoid overloading the drum so debris can move through the wash and drain path more easily. If your machine has a pump filter warning or a service reminder in its settings, treat that as a prompt to check the filter even if the washer still seems to be working fine. A quick cleaning now is much easier than dealing with a flooded floor later.
Conclusion
Once the filter is clean, dry, and reinstalled properly, keep an eye on the next one or two washes for any leaks or slow draining. If the washer still smells damp or leaves water behind after the filter is clear, the issue is probably farther down in the pump or drain hose. Set a reminder to check the filter again in a few months, and make pocket-checking part of your laundry routine so the clog does not come back.
Frequently Asked Questions
Can I clean the drain filter without unplugging the washer?
No. Unplug the washer first so it cannot start unexpectedly while you have the access panel open.
What if my washer does not seem to have a drain filter?
Some models place the service filter somewhere less obvious, and some do not have a user-cleanable one. Check the manual or look near the lower front edge, back, or pump access area before assuming it is missing.
How do I know if the filter seal needs replacing?
If the seal looks cracked, flattened, stretched, or lets water drip after you reinstall the filter, it likely needs replacement.
Why does the washer smell bad even after I clean the filter?
The odor can come from residue in the drum, detergent buildup, a partially clogged drain hose, or the pump area, not just the filter.