Why Your Front-Loader Smells Musty, and How to Get Mold Out of the Door Gasket

By John Calhoun, owner of Mold Remediation Gettysburg PA · Updated October 29, 2026

Nobody buys a washing machine expecting to clean it. Yet a musty laundry room is often coming from the machine that’s supposed to make things clean. Front-load washers seal tight and use little water, so the rubber door gasket and the detergent drawer stay damp between loads, and damp plus soap residue is exactly what mold likes. Whirlpool’s own fix is simple: leave the door open between loads, take clothes out promptly, use only HE detergent in the right amount, wipe the gasket dry and run the cleaning cycle once a month.

Why front-loaders, specifically

A federal appeals court described it better than most manuals. In a 2013 class-action ruling over Kenmore front-loaders, the Seventh Circuit explained that because these machines use water of low volume and temperature, they don’t clean themselves, and residue builds up. Add a door that seals airtight and you’ve built a small, dark, damp room.

The numbers back it up. Consumer Reports surveyed 94,473 members who bought washers between 2009 and 2019: 17% of front-load owners reported mold or mildew, against 3% of top-load owners. In a separate 2018 survey, only 30% of members with a mold problem said they’d gotten rid of it. A GE product executive told CR the front-loader is “a closed system,” which sums it up.

None of this means the machines are bad. ENERGY STAR certified washers use about 14 gallons a load against about 20 for a standard model. Less water is good for the bill. It just means the machine needs a little help drying out.

Big enough to end up in court

It was a real enough problem that Whirlpool and Sears (2016), LG (2016) and Electrolux (2018) each settled class actions over mold and odor in front-loaders, with LG’s settlement alone covering an estimated 700,000 to 800,000 machines. Those claim periods are closed. The lesson isn’t: the problem is designed in, so the fix is a routine, not a one-time scrub.

The two-minute routine

From Whirlpool’s guidance, in the order you’ll do it:

1. Take clothes out as soon as the cycle ends. Wet laundry left sitting causes mildew in the clothes and the washer.
2. Wipe the gasket dry, including inside the folds at the bottom where water pools.
3. Leave the door open between loads. Propped open, the drum can actually dry.
4. Use only HE detergent, and only the recommended amount. More soap means more residue to feed mold.
5. Pull and clean the dispenser drawer now and then.
6. Run the clean-washer cycle monthly with the cleaner the manufacturer names or liquid chlorine bleach, not the thickened or splash-less kind.

For a gasket that’s already spotted, Whirlpool’s deep clean is 3/4 cup of liquid chlorine bleach in a gallon of warm water, left about five minutes, then rinsed and dried. Ventilate, wear gloves, and never mix it with other cleaners. The reasons are in does bleach kill mold.

When the smell isn’t the washer

Here’s the part I care about most. If you’ve cleaned the gasket and the drum and the laundry room still smells musty, the machine may not be the source. Water you never see is the usual suspect: a slow drip, a weeping connection or a little overflow on every spin, soaking the floor or the wall behind the washer for months without a puddle you’d notice.

Pull the washer out, grab a flashlight and work through this in order:

A moisture meter settles it in seconds. Normal readings on the open floor and high ones right behind the washer tell you exactly where to look. Consumers’ Checkbook notes insurers often suggest swapping rubber supply hoses for steel-reinforced ones every three to five years.

Mold from a leaking water heater or washer covers shutting it off and drying it out, and how to find a hidden leak covers the tracing.

A Gettysburg note for renters

Renters are a little over half of Gettysburg borough households in the Census count. If you’re one of them and the washer came with the apartment and the gasket is already black, tell the landlord, with a photo. The gasket is a part that can be replaced. A smell from the floor around it is a building issue, and the college area and borough rentals page covers how rentals in town are licensed and inspected. The Gettysburg housing data page has the numbers.

Leave the door open

That’s the whole trick, really. A front-loader that can breathe between loads rarely smells. One that’s sealed up wet every night always will.

This is John Calhoun at Mold Remediation Gettysburg PA. If the drum is clean and the laundry room still smells, I’ll find the water that’s really behind it. The list of mold services and the overview of mold remediation in Gettysburg, PA explain the rest.