Using vinegar to clean the inside of a steam iron can corrode the heating element and permanently damage the appliance. Most irons have a protective coating inside the chamber, but acid can eat away at that lining, and the metal parts are next.
Four Places You Should Never Use Vinegar
White vinegar is a miracle substance for a lot of cleaning jobs — it's an effective natural deodorizer and an excellent cleaner, and its high acidity breaks down stubborn soap scum, dirt, and buildup. But that same acidity can be damaging in the wrong application. Here's where to skip the vinegar and reach for something else.
Clothes Irons
Electronic Screens
Vinegar leaves windows streak-free, but never use it on a computer, phone, tablet, or TV screen — it can damage anti-glare coatings and make a touch screen less responsive.
Wood Flooring (and Furniture)
Several flooring manufacturers warn against using vinegar on hardwood floors. Diluted vinegar can dissolve the protective finish and leave wood looking cloudy or dull — the same goes for wood furniture.
Dishwashers and Washing Machines (Use Sparingly)
Vinegar's acidity can corrode the rubber seals and hoses in dishwashers and washing machines over time, causing leaks — front-load washers are especially susceptible. Used sparingly, a cup or two now and then to deodorize a load, it's generally fine; just don't make it a half-gallon-every-wash habit.
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