Repair guide · Portland
Cloudy Glasses From the Dishwasher in Portland: Film or Etching?
Updated 10/28/2026
Cloudy glasses from the dishwasher are one of two things. A mineral or detergent film sits on the glass and comes off with a little white vinegar. Etching is wear of the glass surface itself: it does not come off, and no washing reverses it.
In Portland, etching is the more likely of the two. Bull Run water is very soft, and Whirlpool lists both very soft water and too much detergent as causes of etching. Rub a cloudy glass with a little vinegar first: the answer decides everything else.
Before you check anything
- Let the dishwasher cool before you reach in: the heating element at the bottom stays hot after a cycle.
- Unplug the dishwasher or switch off its breaker before you put a hand into standing water.
- Do not pour vinegar and chlorine bleach into the dishwasher together, and do not mix cleaning products in it.
Portland's very soft water
The Portland Water Bureau describes Bull Run water as soft: about 7 to 11 parts per million of hardness, roughly half a grain per gallon. At times the bureau adds water from its Columbia South Shore wells, which is harder, about 80 parts per million or five grains per gallon.
Detergents are made to expect some hardness in the water. In water this soft, the part of the dose that would have gone to the minerals goes to the glass instead. That is why Whirlpool advises against overdosing powder and liquid detergents, and suggests lowering the rinse aid setting where the water is very soft.
A detergent box gives its dose for average water. With Bull Run water, start from the smallest dose the label allows and go up only if dishes come out dirty.
What you can check yourself
The vinegar test
Rub the cloudy part of a glass gently with a cloth and a little white vinegar. If it clears, the cloud was film. If it stays, the glass is etched, or, less often, has a silica film that vinegar does not lift.
How much detergent
If you use pods, each one is a full dose with no way to use less. A powder or gel you measure lets you cut the dose to what soft water needs.
The rinse aid setting
Rinse aid helps with film, but in very soft water too much of it leaves its own residue. Whirlpool's advice for very soft water is to lower the rinse aid setting; the manual shows where it is.
Cycle length and heat
Long, hot cycles speed up etching. For everyday glasses, pick a shorter, cooler cycle that still gets them clean, and keep the high-temperature options for pots and pans.
Water temperature at the sink
About 120°F at the kitchen tap is what dishwashers are designed for. Water much hotter than that does not clean better and adds to the wear on glass.
Which glasses
Delicate glassware suffers first. If a glass is precious to you, wash it by hand.
Film that wipes off with vinegar
Mineral film is rare on Bull Run water, but it does happen when the bureau blends in well water, in homes on a private well, and when the detergent never fully dissolves. Clean the filter, keep the rinse aid filled, and run a dishwasher cleaner once on an empty machine.
Etching: cloudy for good
Etched glass looks dull or feels slightly rough, and sometimes shows a rainbow sheen. Whirlpool calls the damage irreversible: the glass will not clear again. What you can do is stop it spreading to the rest: less detergent, a shorter and cooler cycle, a lower rinse aid setting.
White residue on every dish, not only glass
A chalky coat on plates and the tub as well is usually detergent that did not dissolve or rinse away: cold water at the start of the cycle, old damp detergent, a blocked spray arm, or a tub that filled with too little water. If the checks above do not clear it, the dishwasher itself may not be washing properly.
What usually fails
- Rinse aid dispenser: it stops releasing, or releases far too much, whatever the setting.
- Heating element or temperature sensor: water that never heats leaves detergent behind.
- Water inlet valve: too little water to dissolve and rinse away the detergent.
- Circulation pump: weak spray leaves residue on everything.
- Spray arm: a cracked arm leaves one part of the rack unrinsed.
When to call for a repair
- White residue stays on dishes as well as glasses after you change the dose and run a cleaner.
- The rinse aid level never drops, or empties after one or two cycles.
- Dishes are cool to the touch at the end of a cycle that should heat.
- Detergent is left in the cup.
- The dishwasher shows an error code.
What a repair visit involves
- Book online: choose the appliance, describe the problem and pick up to three times that suit you.
- We confirm one of your times by phone or text. You are not booked until we do.
- We come to your home, test the dishwasher and find the cause.
- You get the price before any repair begins. We repair it with your approval; if a part has to be ordered, we come back to fit it.
The diagnostic visit costs $89. If you go ahead with the repair, the $89 is applied toward it; if you decide not to repair, the $89 covers the diagnosis.
Our work and the parts we install carry a 90-day warranty. The terms are printed on your invoice.
Repairs in Portland
We repair dishwashers at home in Portland and across the Portland metro area. Enter your ZIP code when you book and the form checks it right away.
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Sources
The facts on this page come from these sources, checked when the page was written.