Cloudy dishwasher glasses? Test one first

Test one suitable glass

Choose an ordinary, undecorated glass whose care instructions permit this cleaning method. Do not experiment on crystal, antique glass, painted finishes or metallic trim. For those, ask the maker for cleaning advice.

1. Take the glass out of the dishwasher and let it cool.
2. Dampen a soft cloth with plain white vinegar. Gently rub a small cloudy patch while leaving an adjacent patch untouched.
3. Rinse, dry with a soft cloth and compare the patches in the same light.

Do this separately from other cleaning. Never mix vinegar with bleach or other cleaners. This is a test on one glass, not advice to pour vinegar into your dishwasher.

Whirlpool’s glass-cleaning guide uses this type of spot test to identify removable deposits. The comparison matters: check whether the haze changed, not whether the glass looks shinier while wet.

If the tested patch clears

Removable deposits are a likely explanation for that patch. If the glass’s care instructions permit it, finish cleaning it gently, then hand-wash, rinse and dry it before use. A successful spot test does not mean every glass in the load has the same problem.

Before the next dishwasher load, check your detergent dose against the packaging and your water hardness. Find the local water supplier’s published hardness information or use the test method recommended by the appliance maker. Do not guess from the appearance of one glass.

Maytag’s prevention guide distinguishes hard-water deposits from etching and advises checking the appliance’s loading, cleaning and softener instructions. If your dishwasher has a built-in softener, use its own settings table rather than a generic setting found online.

If the haze stays

Stop scrubbing harder. Whirlpool’s product-help page says a film that resists vinegar may be etching or a silica film. A failed test is therefore not enough to declare every cloudy glass ruined.

Confirmed etching is permanent surface damage. More cleaner will not restore it. Very soft water, too much detergent and long hot cycles can contribute, so automatically increasing detergent or temperature may be the wrong response.

Keep an affected glass out of subsequent test loads while checking its care instructions. If the material or finish is uncertain, ask the glassware maker before trying acids, abrasives or another dishwasher cycle. Discard chipped or cracked drinking glasses safely rather than testing them.

If dishes are dirty as well as cloudy

Food residue and an undissolved tablet suggest a wider washing problem. Check loading and access to the spray arms and detergent dispenser before blaming the water alone. The tablet-not-dissolving guide separates a blocked dispenser from detergent that sticks after the door opens.

If only the glasses look hazy while the rest of the load is clean, stay with the glass and water checks first. That avoids changing several settings without learning which one matters.

Make the next load a useful comparison

Write down the programme, detergent dose, water-hardness setting if present, and whether the test patch cleared. Change one appropriate setting at a time, within the appliance and glassware instructions.

Compare a suitable glass from the next load only after it is dry. If a removable film returns, review water treatment and cleaning guidance. If surface damage is suspected, stop putting that glassware through repeated trials and ask the maker about suitability.

Official guidance checked October 10, 2026.