At a glance
Symptoms
- • Puddle of clear or soapy water directly underneath the washer after a cycle.
- • Water spreading outward from the front bottom edge of the machine.
- • Damp, warped, or discolored flooring around the laundry closet.
- • Visible drips from the drain pump or motor area when the access panel is removed.
- • Musty smell or mold growth along the baseboards near the washer.
- • Unusual grinding, roaring, or squealing noises accompanying the leak (indicating water hitting bearings).
- • Rusty or brownish water pooling underneath the unit.
Common causes
- • Cracked, deteriorated, or loose internal hoses (tub-to-pump or pump-to-drain).
- • Failing or cracked drain pump housing.
- • Worn central tub seal allowing water to bypass into the bearings.
- • Over-sudsing from using non-HE detergent or excessive amounts of soap.
- • Clogged or overflowing detergent dispenser assembly running down the inside cabinet.
- • Cracked outer plastic tub, usually caused by severe overloading or off-balance loads.
- • Loose or damaged drain pump filter (coin trap) O-ring.
Safety First — Read Before You Start
- •Always unplug the washer from the wall outlet before removing any panels to eliminate the risk of electric shock.
- •Turn off both the hot and cold water supply valves at the wall before beginning work to prevent accidental flooding.
- •Be prepared for standing water; use a wet-dry vac or towels immediately to prevent slipping hazards and floor damage.
- •Washing machines are incredibly heavy. Get a helper if you need to tilt, move, or unstack the unit, especially if installed on a pedestal.
- •Internal sheet metal edges can be razor-sharp. Wear heavy-duty work gloves when reaching blindly inside the cabinet.
Tools & supplies you'll need
- Screwdriver set (Phillips and flathead)
- Nut driver set (1/4-inch and 5/16-inch are most common)
- Pliers (slip-joint and needle-nose for hose clamps)
- Shop-vac or a large stack of old towels
- Flashlight or bright headlamp
- Putty knife (to release front panel clips on top-load models)
- Adjustable wrench (if water inlet hoses need to be removed for access)
Step-by-step instructions
Perform a Diagnostic Leak Test
Before taking the machine apart, you need to pinpoint exactly when and where the leak occurs. Wipe the floor completely dry. Place sheets of newspaper or cardboard flat on the floor underneath the washer. Run a short 'Rinse and Spin' cycle. Grab your flashlight and watch the paper. If water drops appear during the fill cycle, the issue is likely high up (dispenser or inlet hoses). If the leak starts during agitation, suspect the tub seal or an outer tub crack. If the puddle forms rapidly during the drain cycle, the drain pump or the tub-to-pump hose is your primary suspect. This simple test saves hours of blind guessing.
Tip: In California, where hard water (250-400 ppm) is common, mineral buildup can cause valves to stick open slightly. Check if the leak happens even when the machine is off.
âš Warning: Do not reach under the machine while it is running. Keep your hands clear of moving belts and the motor.
Check for Over-Sudsing and Dispenser Overflows
One of the most frequent 'leaks' isn't a broken part at all—it's over-sudsing. High-Efficiency (HE) washers use very little water. If you use standard detergent, or simply too much HE detergent, massive amounts of suds are created. These suds expand, escape through the machine's rear air vents, and condense back into water, running down the inside of the cabinet and pooling on the floor. Open your dispenser drawer and look for massive soap buildup. Remove the drawer and scrub the housing with warm water and an old toothbrush. Run a 'Tub Clean' cycle with a washer cleaner or white vinegar to clear out residual soap.
Tip: If you have a water softener installed, you need drastically less detergent than the bottle recommends—often just a tablespoon per load.
Inspect the Drain Pump Filter (Front Loaders)
On almost all front-load washers, there is a small access door on the bottom front panel. Behind this door sits the drain pump filter, also known as the coin trap. If this filter is loose, cross-threaded, or if the rubber O-ring is pinched or degraded, water will leak directly from this housing onto the floor. Place a shallow pan and towels under the door, unscrew the filter counterclockwise, and clean out any debris (coins, hairpins, lint). Inspect the rubber O-ring for cracks. When reinstalling, ensure it is threaded perfectly straight and tightened securely by hand.
âš Warning: Unscrewing the filter will release whatever water is sitting in the tub. If the tub is full, use the small emergency drain hose located next to the filter to empty the water into a bucket first.
Access the Internal Components
To find internal leaks, you must remove the cabinet panels. For most front loaders, you will remove the lower front access panel (usually held by two screws at the bottom) or the rear panel. For top loaders, you may need to remove the entire outer cabinet. This typically involves removing the screws on the rear of the control console, flipping the console back, unclipping the cabinet with a putty knife, and sliding the whole metal shell forward and off. Once inside, use your flashlight to trace water stains. Water leaves a distinct white, chalky trail (or a rusty brown trail) as it dries.
Tip: Take photos with your phone of any wiring harnesses or hoses before you disconnect them. It makes reassembly completely foolproof.
Examine the Drain Pump and Internal Hoses
Locate the drain pump (usually mounted to the floor of the washer cabinet, connected to the drain hose). Inspect the plastic housing of the pump for hairline cracks. Check the large black accordion hose that runs from the bottom of the tub to the pump (the tub-to-pump hose). Squeeze it gently; over time, bleach and hard water can cause the rubber to rot and crack in the folds. Ensure the spring clamps holding the hoses to the pump are positioned correctly and haven't lost their tension. If the pump housing is leaking, the entire pump must be replaced (a $40-$120 part depending on the brand).
Tip: If replacing a hose clamp, swap the old spring clamp for a stainless steel worm-gear clamp for a tighter, more reliable seal.
Inspect the Tub Seal and Bearings
Look directly up at the center bottom of the outer tub, where the transmission shaft or motor connects. If you see water dripping from this center point, or if there is a spray of rusty, brown water slung across the inside walls of the cabinet, your central tub seal has failed. The tub seal keeps water inside the tub; when it fails, water leaks down into the bearing assembly, washing away the grease and causing the bearings to rust and roar during the spin cycle. Replacing a tub seal and bearings is a major teardown requiring specialized tools.
âš Warning: If the tub seal is leaking, do not continue using the washer. The leaking water will eventually short out the motor or the motor inverter board, turning a mechanical repair into a severe electrical failure.
Check the Outer Tub for Cracks
If the hoses, pump, and seal are dry, inspect the plastic outer tub itself. Heavy, off-balance loads (like a single large comforter or heavy dog bed) can cause the inner basket to violently strike the outer tub, causing a hairline fracture in the plastic. Shine your flashlight around the perimeter of the tub, paying close attention to the plastic seams and the mounting tabs where the suspension springs attach. While small cracks can theoretically be patched with marine-grade epoxy as a temporary fix, a cracked outer tub generally requires a full tub replacement.
Tip: Friction from broken shock absorbers can also melt or wear a hole through the outer tub. If your washer bounces violently during spin, check the shocks!
Brand-specific notes
Some brands have known design quirks worth knowing about before you start.
LG
LG front loaders (WM series) frequently leak from the drain pump filter housing if the coin trap isn't tightened properly or if the O-ring gets pinched. Always check this first behind the little bottom-left door. If the leak is internal, check the circulation pump hoses which are prone to rubbing against the cabinet.
Samsung
On Samsung WA series top loaders, the water valve assembly at the back can crack from water hammer effects, sending water down the back wall that pools underneath. Also, check the internal dispenser hoses which are notorious for slipping off if household water pressure spikes.
Whirlpool
Whirlpool and Maytag direct-drive top loaders, as well as newer VMW (Vertical Modular Washer) models, often leak from the tub seal. If you see brown, rusty water slinging around the inside of the cabinet, the tub seal and bearings are shot. This is a highly involved repair.
GE
GE front loaders often have issues with the large rubber door boot gasket tearing at the bottom (usually around the 6 o'clock position). Water escapes through this tear, runs down the inside of the front panel, and pools underneath the machine, masquerading as a bottom leak.
Bosch
Bosch compact 24-inch washers often leak due to a clogged internal condenser or a cracked drain pump housing. Because they are frequently installed in tight closets or under counters in coastal condos, finding the leak early is critical to save your cabinetry.
What our techs see most often
Here in LA and Orange County, a lot of washers are installed in uninsulated garages where temperature swings can prematurely age rubber hoses, but inside the house, the number one 'leak' we get called for is just over-sudsing from folks using cheap, non-HE detergent in high-efficiency front loaders.
When to call a professional
- → If the leak is traced to a failed central tub seal and bearings (indicated by rusty water and a roaring spin cycle).
- → If the outer plastic tub has a severe crack requiring a complete tub replacement.
- → If you cannot locate the source of the leak after removing the access panels and running a test cycle.
- → If the washer is stacked under a gas dryer (do not attempt to unstack or move gas appliances yourself).
- → If the water shut-off valves at the wall are heavily corroded, stuck, or leaking themselves.
Washer Maintenance & Replacement Tasks
Step-by-step guides for individual maintenance jobs related to this appliance.
How to Clean a Washing Machine Drain Pump Filter
How to Remove Mold from a Front-Load Washer Gasket
How to Descale a Washing Machine with Vinegar (Hard Water Fix)
How to Level a Washing Machine to Stop Vibration
How to Replace a Washing Machine Drive Belt
Frequently asked questions
How much does it cost to fix a washer leaking from the bottom?
If it's a simple internal hose replacement or cleaning the coin trap, DIY costs are $10-$30. A new drain pump runs $50-$150 for the part. If you hire a pro, expect $150-$300 for pump or hose repairs. However, a tub seal and bearing replacement can easily exceed $400-$600, often making a new washer a better financial option.
Can a clogged drain filter cause water to leak underneath?
Yes, especially on front loaders. If the drain pump filter (coin trap) is severely clogged with hair and debris, water can back up under pressure and leak through the pump housing seals, or it can force water up and out of the machine's overflow vents.
Why is my washer leaking rusty water?
Rusty or brown water pooling under the machine is a classic sign of a failed tub seal. The seal's job is to keep water out of the bearings. When it fails, water washes the grease out of the bearings, causing them to rust quickly. The rusty water then drips down the drive shaft onto the floor.
Can using too much detergent really cause a leak?
Absolutely. High-Efficiency (HE) washers use very little water. If you use standard detergent or too much HE detergent, it creates a massive amount of suds. These suds expand, escape through the machine's rear air vents, and condense back into water, running down the inside panels and pooling on your floor.
Related Repair Guides
Washing Machine Won't Drain: Step-by-Step Fix
A washer that fills but never empties is the most fixable major washer fault we see — about 70% of these calls are resolved by clearing a clogged pump filter, a kinked drain hose, or a coin lodged in the impeller. Most homeowners can complete this repair in under an hour with basic tools.
Washing Machine Not Spinning: How to Fix It
A washer that fills and agitates but won't spin is one of the most frequent calls our dispatch handles. In most cases the cause is an unbalanced load, a failed lid switch or door lock, a broken drive belt, or a worn motor coupling — and roughly two out of three of those you can fix yourself in under an hour.
How to Clean a Washing Machine Drain Pump Filter
Cleaning your front-load washer's drain pump filter is one of the easiest and most effective maintenance tasks you can do. Grab some towels and a shallow dish, and let's clear out those trapped coins, lint, and bobby pins to get your washer draining perfectly again.