Verdict: Partly true. Whirlpool warns that vinegar's acidity can weaken a washer's rubber seals and hoses over time and advises against pouring it into the drum, but brands don't all agree: a Samsung Care tip uses vinegar in the drum for a deeper clean.
Where the idea comes from
White vinegar has a long list of household uses. It loosens mineral scale, cuts soap film and has a reputation as a natural deodorizer, so it often gets recommended for a washer that smells musty or a drum that looks dull. Some people also pour it into the softener cup in place of fabric softener.
The worry about seals comes from the other side of the same fact. Vinegar is an acid, and a washing machine relies on rubber: the door boot on a front-loader, the hoses that carry water in and out, and seals around the tub and pump. Whether that combination matters is a fair question, and manufacturers have answered it, though not all the same way.
What the evidence says
Whirlpool's article on cleaning a washing machine with vinegar says that adding vinegar directly to the drum can potentially lead to repairs or, worse, permanent damage. It explains that "over time, vinegar's acidity can cause damage to washing machine components, particularly rubber seals and hoses," and that seals can weaken over time. Its recommended alternative is a washing machine cleaner tablet run on a hot cycle, or bleach after checking the use and care guide.
The same article is not anti-vinegar everywhere. For removable detergent dispenser drawers, it suggests soaking the drawer in equal parts white vinegar and water. The drawer comes out of the machine, so the rubber parts never sit in the solution.
Not every manufacturer takes the same line. A Samsung newsroom article, The 5-Minute Fix from Samsung Care, suggests pouring about a quart of white vinegar mixed with baking soda into the drum for a deeper clean, scrubbing the interior with a stiff nylon brush, and then running the hottest wash. The fair reading of both: the damage Whirlpool describes comes from acid contact over time, so a regular vinegar habit is the thing to avoid, and your washer's own manual settles what its maker allows.
Whirlpool's own care instructions for removing odors from a washer don't mention vinegar at all. They call for the Clean Washer cycle with affresh washer cleaner or liquid chlorine bleach, at least once a month or every 30 wash cycles, whichever comes first.
One more point from Whirlpool deserves its own line: never mix vinegar, or any acid, with bleach. The combination releases chlorine gas.
What to do instead
- Find the cleaning cycle in your manual. It may be called Clean Washer, Tub Clean or Self Clean, and the manual names the product it's designed for.
- Run it on the schedule the manual gives. Our post on how often a washer really needs a cleaning cycle compares a few brands.
- Wipe the door boot and the folds of the gasket with a soft cloth after the last load of the day.
- Leave the door or lid open between loads so the tub can dry.
- If you like vinegar for the dispenser drawer, take the drawer out and soak it on its own, then rinse it before putting it back.
Exceptions worth knowing
- •A tip isn't a manual. Samsung's vinegar suggestion comes from a newsroom article, not a use and care guide. If your manual names a cleaning product or rules one out, follow the manual over any article, including this one.
- •Occasional use isn't an emergency. If you've run vinegar through your washer a few times, there's no need to panic. Look over the door boot for cracks, stickiness or swelling, and check the hoses for bulges.
- •Leaks change the picture. Water under the washer, a split door boot or a hose that weeps at the fitting should be checked before the next load.
Sources
- •Whirlpool: Should you clean your washing machine with vinegar? (seals and hoses; dispenser drawer soak; never mix with bleach)
- •Whirlpool: Removing Odors from the Interior of a Washer (Clean Washer cycle, monthly or every 30 cycles)
- •Samsung Newsroom: The 5-Minute Fix from Samsung Care (vinegar and baking soda deep-clean tip)
The short version: Don't make vinegar a routine washer cleaner; use the cleaning cycle and product your manual names.
If the door boot is cracked or the washer is leaking, call TrueFix Los Angeles at (213) 787-3989 or book a washer repair visit.