Water under a washer usually comes from the supply hoses, the drain hose or standpipe, the drain pump, the tub seal, or the door gasket on a front loader. Check the hoses first: insurance research found more than half of washing machine water damage claims involved supply hoses, with failures rising sharply after five years. Replace rubber hoses with braided lines and check the floor and wall for hidden water damage.
Washing machines move a lot of water through a few rubber hoses and a drain, often in a closet or upstairs laundry room where a leak can do real damage. Research by the Insurance Institute for Business & Home Safety found washing machine failures are among the top sources of home water damage claims, and that supply hoses were involved in more than half of them. Here’s how to find where your washer is leaking and fix it.
Find the source
Dry the floor, then run a short cycle and watch.
| When it leaks | Likely cause |
|---|---|
| Any time, even when off | Supply hose or valve behind the washer |
| While filling | Supply hose connection or the fill valve inside the washer |
| While draining | Drain hose, standpipe overflowing, or a clogged drain |
| During the spin or wash | Drain pump, internal hoses, or the tub seal |
| From the front (front loader) | Door gasket torn or dirty |
| Suds on the floor | Too much or the wrong detergent |
Supply hoses: check these first
- Look for bulges, cracks or wetness at the hose ends.
- Check the washers inside the hose couplings.
- Replace rubber hoses every five years, even if they look fine. The IBHS found failure rates rise sharply after five years, and the average failed hose was nearly nine years old.
- Upgrade to braided stainless steel hoses.
- Leave a few inches of clearance so the washer doesn’t crush the hoses against the wall.
- Consider turning the valves off when you’re away for more than a day.
Drain problems
- The drain hose should be secured in the standpipe, not just hooked over the edge.
- An overflowing standpipe usually means a partial clog in the drain line.
- Water backing up in a laundry sink during draining also points to a drain clog.
Internal leaks
If the water comes from under the machine during the wash or spin, the cause is usually inside: the drain pump, an internal hose, or the tub seal. That’s an appliance repair.
When the washer isn’t the problem
If the washer stays dry but the floor doesn’t:
- Check the washer box in the wall, where the valves and drain connect. A leak inside the wall can run down to the floor.
- Check the water heater, softener or utility sink nearby. See water heater leaking and water softener leaking.
- Do a meter test with everything off. If the meter moves, a pressurized pipe is leaking.
A leak inside the laundry wall is a hidden leak. Thermal imaging and moisture mapping find it without opening the whole wall.
Check for hidden damage
A washer leak can spread under vinyl, laminate or tile and into the subfloor. In a second-floor laundry, it often shows up first as a stain on the ceiling below. See water leaking from the ceiling.
Signs of hidden damage:
- Soft or spongy floor in front of the washer
- Lifting or discolored flooring
- Swollen baseboards
- A musty smell
Hidden water leak detection maps the wet area so only damaged material is removed.
Prevent the next leak
- Replace hoses every five years with braided lines.
- Put a leak sensor on the floor beside the washer. See smart water leak detectors.
- Use a washer pan with a drain in upstairs laundries.
- Know where the washer’s shutoff valves are.
Get it found
If your laundry floor or the ceiling below stays wet, we find hidden leaks across Bargersville and Johnson County, including Greenwood, Franklin and Center Grove.
Still can’t find it?
Our hidden water leak detection pinpoints the leak without tearing things up, so the repair starts in the right spot.
Frequently asked questions
Why is my washing machine leaking from the bottom?
Common causes are a loose or cracked supply hose, a leaking drain hose or overflowing standpipe, a failed drain pump, a worn tub seal, a torn door gasket on a front loader, or too much detergent causing suds overflow.
How often should washing machine hoses be replaced?
Every five years, even if they look fine. The Insurance Institute for Business & Home Safety found hose failures rise sharply after five years.
Can a leaking washer damage my floor?
Yes. Water can soak the subfloor under the washer, spread under flooring, run into the wall, and show up on the ceiling below in a second-floor laundry.
What if the washer is dry but the laundry floor is wet?
Check the washer box in the wall, the valves, the standpipe and nearby plumbing like the water heater or a utility sink. A leak inside the wall can run down to the floor.