What does a clogged dishwasher filter cost?
Updated August 2026
← What skipping home maintenance costs
Skipping the dishwasher's bottom filter starts as dirty dishes and ends with a $150–350 drain-pump or motor failure, roughly a quarter to half the price of a $600–1,200 replacement machine, all to avoid a five-minute rinse that costs nothing. Food and grease pack the mesh, water cannot drain, and the pump grinds against debris it was never built to eat. A filter rinse once a month keeps the whole cycle clean. Let it cake for a year and the sour smell, the grit on your glasses, and the standing water at the bottom are the machine telling you the repair clock has started. Here is the climb from a free chore to a service call.
The escalation ladder
Every row below is the same leak, left a little longer. The top is a cheap warning; the bottom is a claim.
| What happens | Typical bill | How fast |
|---|---|---|
| You rinse the filter under the tap each month | $0, about 5 minutes DIY | Same day |
| The filter cakes; dishes come out gritty and the machine smells sour | $5–15 in vinegar and cleaner cycles | 1–2 months |
| Standing water sits in the bottom after every cycle | A backed-up drain and a damp kitchen floor | 2–4 months |
| Debris strains the drain pump until it burns out | $150–350 for a new pump or motor plus labor | 1–3 years of neglect |
| Repair approaches the price of a new machine | $600–1,200 for a replacement dishwasher | Once the pump goes |
Warning signs
You will smell it before you cost it out. A sour, swampy odor when you open the door means food is decaying in a clogged filter, and grit or sandy residue left on supposedly clean glasses and plates is the same debris getting sprayed back onto the load. Watch for an inch of cloudy water standing in the sump after a finished cycle, a cycle that runs long or leaves dishes wet, and a gurgle at the drain. Pull the bottom rack and twist out the cylindrical filter: if it is packed with softened food, labels, and grease, it has been throttling the pump for a while. Each of these is far cheaper to fix the day you notice it.
The prevention math
The fix is a 5-minute rinse of the removable filter once a month: twist it out, flush it under hot water, brush the mesh with an old toothbrush, and drop it back in. Wipe the sump, run a hot vinegar cycle every month or two, and clear the spray-arm holes with a toothpick. Total yearly cost is a jug of vinegar. Against the table, that habit is the gap between a dishwasher reaching its full 9-to-12-year life and one that needs a $150–350 pump at year five. The interval is in how often to clean a dishwasher filter, and the scale-removal step is in how often to descale a dishwasher.
Every line in that table starts with a skipped 10-minute task. OnOtto keeps the 10-minute version on your calendar so the $2,000 version never happens.
Get the nudge before the billFrequently asked questions
How do I clean my dishwasher filter?
Pull out the bottom rack, then twist the cylindrical filter, usually a quarter turn counterclockwise, and lift it out along with the flat mesh screen beneath it. Rinse both under hot running water, scrub the mesh with a soft brush to clear trapped grease, and check the sump for glass or bones before dropping the filter back and locking it. The job takes about 5 minutes and no tools. Do it monthly, or weekly if you rarely scrape plates before loading.
Do I need to rinse dishes before loading if I clean the filter?
Scrape, do not rinse. Modern dishwashers and detergents are built to handle food soil, and heavy pre-rinsing can actually fool the soil sensor into running a weaker cycle. Scrape solids into the trash, load, and let the machine work, then a monthly filter rinse catches what settles out. Bones, fruit stickers, and large debris should always be removed by hand, since those are exactly what jam the filter and the drain pump.
Why does my dishwasher smell even after I clean it?
If the odor lingers after a filter rinse, check three places: the spray arms (unclog the holes with a toothpick), the door gasket and edges (wipe the hidden lip where gunk hides), and the drain hose (a low loop can hold stagnant water). A monthly hot cycle with a cup of white vinegar in a bowl on the top rack clears biofilm the filter rinse misses. Persistent smell paired with slow draining points back toward a clog in the pump or hose.
Is standing water in the bottom of the dishwasher normal?
A small amount right below the filter is normal by design, since the sump keeps the pump seal wet. An inch or more of cloudy water sitting after a full cycle is not: it means the filter, drain hose, air gap, or pump is clogged. Start with the cheapest cause and clean the filter, then check the drain hose for kinks and the garbage-disposal knockout plug if the dishwasher was recently installed. Left alone, a chronic backup burns out the drain pump.