Quick answer: A washing machine leaking gives itself away by where and when the water appears. Find out where the water appears and when. A leak at the front of a front loader is usually the door seal or the detergent drawer. A leak at the back is usually a hose connection or the inlet valve. A leak that only happens during the spin points at the drain pump, the outer tub seal or a split hose under pressure. Water under the middle of the machine is the hardest to place and normally means the pump or the tub seal. Turn off the water supply taps first, then work out which of those it is.
Key Takeaways
- Turn the two supply taps behind the machine off before anything else. That stops the worst case.
- Note when it leaks. Filling, washing, draining or spinning each implicate different parts.
- Overdosing detergent causes overflow leaks from the drawer that look like a fault and are not.
- A tub seal leak on an older machine is one of the few repairs where replacing the machine can make more sense.
First, stop the water
Behind the machine there are one or two taps feeding the inlet hoses. Turn them off. A slow leak from a seal will stop being a problem, and a burst inlet hose will stop being a flood.
Then mop up, put down dry paper towel or newspaper around the base, and run a short cycle while you watch. The paper shows you where water first appears, which is the single most useful piece of information and the thing people usually cannot answer when they call.
Do not pull the machine out and start removing panels. Leave it as it is once you know where the water comes from.
Reading the timing of a washing machine leaking
When it leaks, and what that means
| When | Where | Likely cause |
|---|---|---|
| As soon as the taps are on, machine idle | Back | Inlet hose washer or connection |
| While filling | Back or under | Inlet valve, or hose to the drawer |
| While filling | Front, from the drawer | Blocked drawer, or too much detergent |
| During the wash | Front, around the door | Door seal torn, perished or fouled |
| During drain and spin only | Under, front | Drain pump, filter not tight, split hose |
| During spin only, worse at high speed | Under, middle | Outer tub seal or bearing |
| Constant trickle, machine off | Under | Cracked tub or a failed inlet valve |
Leaks at the front
The door seal
On a front loader the rubber boot around the door takes constant abuse. Underwire from a bra, a zip, a coin or a nail can nick it, and the fold at the bottom holds water and grit that wears it over time.
Pull the seal back and inspect the whole circumference, especially the lower third. You are looking for splits, perished rubber, or a hard deposit stopping the door closing squarely. A build-up of mould and sludge in the fold can hold the seal open enough to weep, which is one more reason the cleaning routine in how to clean a washing machine matters.
A torn gasket is a replacement part, and a routine one.
The detergent drawer
Water running down the front of the machine from the drawer is usually not a fault at all. Either the drawer housing is blocked with set softener so incoming water backs up, or there is simply too much detergent producing foam that overflows.
Pull the drawer out, soak it, brush the jets in the housing above it, and cut the dose. High-efficiency machines use a fraction of the water older machines did and need far less soap than most people use.
Leaks at the back
Inlet hose connections are the most common and the most dangerous, because they are under mains pressure all the time. Check both ends of both hoses, make sure the rubber washers are seated, and hand-tighten firmly.
Rubber inlet hoses perish. If yours are original on a machine over about eight years old, replacing them with braided steel hoses is cheap insurance against a burst while nobody is home.
An inlet valve that fails to close fully lets water trickle in continuously, which shows up as water in the drum when the machine has not been used and sometimes as a leak from the valve body itself. That one is covered in more detail in water filling the washer tub.
Leaks during drain and spin
The drain circuit only holds water under pressure while the pump is running, so a leak that appears exactly then is a strong clue.
The most common cause is the drain pump filter not screwed back in tightly, or its seal being dirty, after someone cleaned it. Check that first because it takes seconds.
Beyond that, the pump housing itself can crack, and the flexible hose between the tub and the pump can split at a bend. Both need the machine opening up.
Leaks during spin only, from the middle
This is the one nobody wants. The outer tub has a seal where the drum shaft passes through it, and behind that seal are the drum bearings. When the seal fails, water gets to the bearings, and the bearings then fail loudly.
The sequence is usually: a rumbling or grinding noise that gets worse over a few months, then water appearing under the middle of the machine during the spin.
Replacing a tub seal and bearings is a big job. On many machines the outer tub is sealed and has to be replaced as a unit, and at that point the parts and labour can approach the price of a new washer. We will tell you honestly when that is the situation rather than quote you for it. Some people still choose to repair because they like the machine, and that is a fair decision to make with the numbers in front of you.
What is not a leak
Condensation on the outside of the machine in a humid basement. Water tracking along the floor from a nearby sink or floor drain. A wet patch that turns out to be the standpipe backing up when the machine discharges, which is a household drain problem rather than an appliance one.
Put dry paper down and confirm the water is actually coming from the machine before assuming.
Before we arrive
Turn the supply taps off, and note where and when the water appeared. That is genuinely all we need.
Leave the machine plugged in and where it is. Do not take the back off and do not tip it to look underneath, because moving a machine with water trapped in it redistributes the evidence and makes the leak harder to locate. A fault left alone gets diagnosed faster, and most of our jobs finish in one visit.
Frequently asked questions
Is it safe to keep using it?
No. Even a small leak onto a floor is a slip risk and a mould risk, and a hose failure while you are out is a much bigger problem. Turn the taps off between loads at minimum.
Why does it only leak with big loads?
Higher water level and more movement. A seal that is marginal will hold at a low level and fail at a high one, and an overloaded drum flexes more.
Could too much detergent really cause a leak?
Yes, routinely. Excess foam finds its way out of the drawer and sometimes past the door seal. Halve the dose and run a cycle before assuming a fault.
Is a leaking washing machine worth repairing?
A hose, a drawer, a door seal, a pump or a filter housing: almost always yes. Tub seal and bearings on an older machine: often not, and we would rather say so.
What about a leak from the bottom of a top loader?
Same logic. Timing tells you which circuit. Fill-time leaks are the inlet side, spin-time leaks are the drain and tub side.
Where to go from here
Related: a washing machine not draining or spinning, not filling up, and drain smells, which often share a cause with drain-side leaks. Prevention is covered in five ways to avoid the most common washing machine repairs.
To get it looked at, book washer repair in Winnipeg.
Appliance still not right? Our Winnipeg technicians diagnose faults that other companies could not solve. Call (431) 813-3999 or book a visit online. Diagnosis is $85 in the city, and if you go ahead with the repair the quote you are given is the whole price, not a bill on top of the call-out.
