How to Clean a Dishwasher Filter Correctly
Your dishwasher's filter is doing heavy lifting every single day. It traps food particles, grease, and debris before they clog your drain line or damage the pump. But here's what I see constantly in homes across the country: most people either ignore the filter completely or clean it haphazardly and miss the real problem spots.
A clogged or dirty filter doesn't just reduce cleaning performance—it leads to standing water, bad smells, and eventually a call for dishwasher repair that could've been prevented. The good news? Cleaning it correctly takes less than five minutes and saves you hundreds of dollars.
Why Your Dishwasher Filter Actually Matters
The filter system in your dishwasher typically has two parts: a fine mesh filter that catches small particles, and a coarse filter that stops larger debris. Together, they protect the drain pump—one of the most expensive components to replace.
In many homes, we see filters so packed with food buildup that water can barely flow through. This trapped moisture creates a breeding ground for bacteria and mold, which is why your dishwasher smells like a gym locker after a week of skipping it. Sometimes people mistake this smell for a broken appliance when it's just a neglected filter.
Where to Find Your Filter and How to Access It
Most dishwashers have filters located at the bottom of the tub, near the spray arm. Open your dishwasher and look down—you'll see either a cylindrical filter basket or a flat screen-style filter depending on your model. Some filters twist out, others pull straight up. Check your manual if you're unsure, but most come out with minimal effort.
Pro tip: Do this with an empty dishwasher. You don't want to be fishing around with dishes in the way or water sloshing everywhere.
The Step-by-Step Cleaning Process
Step 1: Remove the filter assembly
Gently lift or twist your filter upward, depending on the design. Don't force it—if it feels stuck, you might have a piece of silverware wedged underneath (happens more often than you'd think).
Step 2: Rinse under warm running water
Hold the filter under your kitchen sink and let warm water run through it. Use your fingers to wipe away the loose gunk. This removes about 70% of the debris without any scrubbing.
Step 3: Scrub the mesh thoroughly
Take a soft-bristled brush—an old toothbrush works perfectly—and gently scrub both sides of the fine mesh filter. Pay attention to the corners and edges where food particles like to hide. You're looking for a clean, open mesh where water flows freely. If you see stubborn buildup, soak it in warm water for five minutes before scrubbing.
Step 4: Check the filter housing
While your filter is out, look inside the housing where it sits. You'll usually find a small amount of debris settled at the bottom. Use your fingers or a cloth to wipe this area clean. This is the step most people skip, and it's actually important.
Step 5: Reinstall and test
Put the filter back in place and run your dishwasher on a short cycle to make sure water drains properly.
Common Mistakes That Keep Your Filter Dirty
I've seen people scrub their filter with abrasive scouring pads and actually damage the mesh. Use soft brushes only—you're cleaning, not sanding. Another mistake is cleaning the filter but ignoring the drain trap at the bottom of the tub. Some models have a separate trap that catches larger items; clean that too.
Some homeowners also assume that running the dishwasher with a dirty filter and hot water will self-clean the system. It won't. Manual cleaning is non-negotiable for keeping your appliance running smoothly and avoiding expensive washer repair calls or similar service visits.
How Often Should You Clean It?
Weekly is ideal if you wash dishes daily. At minimum, clean your filter every two weeks. If you have a household of six people running the dishwasher constantly, weekly is your baseline. If you live alone and run it once a week, every two weeks is reasonable.
When to Call for Professional Help
If you've cleaned the filter thoroughly and your dishwasher still has standing water, drains slowly, or smells bad, you may have a deeper issue with the drain line or pump. That's when you need professional dishwasher repair. A technician can check for clogs in the drain hose and inspect internal components.
Final Thoughts
Cleaning your dishwasher filter isn't glamorous, but it's one of the simplest maintenance tasks that prevents real problems. Most people don't realize how much of their appliance's lifespan depends on this small, overlooked part. Spend five minutes on your filter every couple of weeks, and you'll avoid the frustration of a broken dishwasher and the cost of repairs.
Quick Checklist:
1. Remove the filter by twisting or lifting it out
2. Rinse under warm water to remove loose debris
3. Scrub the fine mesh with a soft brush, paying attention to corners
4. Wipe the filter housing and drain area clean
5. Reinstall and run a test cycle to confirm proper drainage
