Washer drain not draining: causes, part cost
Prices checked 2026-08-28
A washer drain not draining is most often a clogged standpipe or lint trap problem - about 34% of reported jobs. Here is how to confirm it, what the part costs, and when to stop.
The washer drain line moves a lot of water fast, with lint and debris riding along. Blockages and air gaps are the classic faults, and both are DIY.
Washer drain not draining is one of the most common repair searches there is. Standing water at the bottom is the most visible fault a washer or dishwasher has. The cause is almost always a blockage or a failed pump, and the blockage is something you can clear yourself in minutes.
Before you call anyone: 30-second checks
- Check the pump filter or trap – hair, coins and debris collect there before anything else.
- Check the drain hose for kinks and the standpipe for blockage.
- Listen for the pump: silence at drain time points at the pump or its switch, not a clog.
The likely causes, ranked
Clogged standpipe or lint trap
About 34% of washer drain not draining jobs come back to this cause. Restricted airflow or a blocked path is the most common and cheapest cause in this whole list – the unit cannot breathe, so it cannot do its job.
How to confirm it: Check the filter, vent or hose run for build-up and restriction; cleaning it is free, and it is the first thing to rule out.
Typical fix: usually free. A capable DIYer can usually handle this one.
Kinked drain hose
About 26% of washer drain not draining jobs come back to this cause. Restricted airflow or a blocked path is the most common and cheapest cause in this whole list – the unit cannot breathe, so it cannot do its job.
How to confirm it: Check the filter, vent or hose run for build-up and restriction; cleaning it is free, and it is the first thing to rule out.
Typical fix: usually free. A capable DIYer can usually handle this one. You would be looking for a drain hose.
Drain pump failed
About 24% of washer drain not draining jobs come back to this cause. A motor, fan or pump with its drive components is a wear item – belts stretch, bearings dry out, capacitors lose their charge and relays stick.
How to confirm it: Listen for the motor: a hum with no movement points at a capacitor or belt; a grinding or squeal points at a bearing. Each has a different price tag.
Typical fix: $130. This one is best left to a professional. You would be looking for a drain pump.
High standpipe height / syphon issue
About 16% of washer drain not draining jobs come back to this cause. This is a component-level failure – the part itself has worn out or failed, which is why it sits on the ranked list rather than the free-check list.
How to confirm it: It is worth confirming with a multimeter or a visual check before ordering the part, and worth asking the shop if the part is returnable.
Typical fix: usually free. A capable DIYer can usually handle this one.
When to stop and call a pro
If the filter is clean and the hose is clear but water still sits, the pump or drain valve has failed – that is a $100-250 part, and usually still DIY-able with the machine unplugged and drained.
How to keep it from coming back
Empty pockets, wipe the pump filter a few times a year, and never run the machine with a kinked hose – drainage problems are almost entirely preventable.
Bottom line: Washer drain not draining is worth diagnosing before you call anyone – the free checks above catch a surprising share of cases, and the ranked list tells you what the part should cost if it is not one of them. Run the figures through the repair-or-replace test on this page before you authorise any work, and never pay for a diagnosis without getting the part name and the price in writing first.
Likely causes, most common first
| Likely cause | How often | Typical fix | Who does it |
|---|---|---|---|
| Clogged standpipe or lint trap | 34% | free | DIY-able |
| Kinked drain hosedrain hose | 26% | free | DIY-able |
| Drain pump faileddrain pump | 24% | $130 | Pro job |
| High standpipe height / syphon issue | 16% | free | DIY-able |
Frequencies are the share of reported jobs attributed to each cause across repair-platform and forum data - a starting point for diagnosis, not a certainty.
What this should cost to put right
Across the causes listed above the repair runs $0 to $130. A quote far above the top of that range is usually a diagnosis of convenience - get a second opinion before you authorise it.
Repair it, or replace the unit?
This is the number people get wrong most often, and it costs them the most. Run the quote through the test - it uses the mid-point cost of the fix above against a new unit and the years this one has left.
REPAIR IT
The repair is 7% of a new unit and the appliance has roughly 4 year(s) of expected life left. Fixing it is the economical call. A new unit would save about $45/year in running costs, so keep repairing until that pays back in under 5 years.
Decision rule: repair when the fix costs under 50% of a replacement and the unit is under 70% through its expected life.
Other washer drain symptoms
Common questions
Is it dangerous if my washer drain has a "not draining" problem?
Usually not immediately - none of the likely causes on this page involve gas, fuel or a mains electrical fault. The two cautions that apply everywhere: keep water away from any electrical point, and if you ever smell gas or burning, stop diagnosing and call a professional.
How much does it cost to fix a washer drain with a "not draining" problem?
Most fixes for this run $0 to $130. The most common cause, clogged standpipe or lint trap, runs about nothing - it is a free check to put right, and the part you would be looking for is not usually sold separately. Get the diagnosis in writing before authorising anything above the top of the range.
Why does my washer drain have a "not draining" problem?
In about 34% of reported cases it is a clogged standpipe or lint trap. It is the first thing to check because it is the most common - and usually the cheapest. If that checks out clean, work down the ranked list on this page before paying for a diagnosis.
Should I repair or replace my washer drain?
Repair it when the fix costs under half of a replacement and the unit is under 35% through its roughly 10-year expected life. Past that point a repair is usually a deposit on the next failure - run the test on this page with your actual quote before you decide.
How this figure was built
Reviewed 2026-08-28 · quarterly.
- Bureau of Labor Statistics, Occupational Employment and Wage Statistics - construction and repair trades
- EPA Energy Guide appliance ratings
- North American Electrical Metrics / manufacturer parts catalogues
National averages. Local labour can run 20-40% above or below these figures; the calculators apply a metro factor on top.
Full disclaimer · How we price