Dishwasher not drying dishes
Not urgent Wet dishes are a convenience issue only; there is no safety or damage risk in waiting to have it looked at.
What this symptom might mean
Dishwashers dry in different ways, and knowing which yours uses explains a lot. Older North American models use an exposed heating element and a fan-assisted vent. Many European-style and newer models (Bosch, Miele, some others) rely on condensation: the stainless tub cools faster than the hot dishes, water condenses on the walls and runs down. Some add a door that opens automatically at the end, or a mineral-based drying system. Condensation drying leaves plastics wet by design because plastic does not hold heat, and it depends heavily on rinse aid to make water sheet off.
So the first causes are usage: an empty rinse aid dispenser, a quick or eco cycle with no heated dry, dishes nested so water pools, and unloading before the drying phase finishes. If those are right, the possibilities are mechanical: a heating element that has failed (the tub will not be warm at the end of a heated cycle), a vent fan or vent door that does not open, a rinse aid dispenser that no longer dispenses, or a thermostat or control that skips the heat.
Safe checks you can do first
- Rinse aid. Fill the dispenser and, if the manual allows, raise the dosage setting a step. This is the single most common fix on condensation-drying models.
- Cycle and options. Select a cycle with heated dry, Extra Dry or Sanitize where available. Eco and quick cycles reduce or skip drying.
- Loading. Angle cups and bowls so water runs off. Do not nest items. Put plastics on the top rack and accept that they will hold droplets.
- Let it finish. Wait until the cycle is fully complete and, on condensation models, leave the door closed a few minutes or open it a crack and wait; steam has to condense somewhere.
- Water temperature. Run the kitchen tap hot before starting. Cool incoming water shortens the heat the dishes retain.
- Feel the tub. At the end of a heated cycle, open the door carefully; the tub walls and dishes should be hot. If everything is lukewarm, note that. It points at the heater.
Nothing above involves gas, wiring, refrigerant or removing panels. Those are technician-only: Removing the tub floor or door panel to reach the heater, vent or dispenser; Electrical tests of the heating element or fan; Work on the household hot-water supply.
Repairs a technician may recommend
After inspection, not from the symptom alone.
- Heating element replacement. When the tub is cool at the end of a heated-dry cycle and the element tests open. The technician also confirms the wash was heated.
- Vent fan or vent door assembly replacement. When the fan does not run or the vent door stays closed on fan-assisted models, leaving steam in the tub.
- Rinse aid dispenser replacement. When the reservoir stays full for months or leaks its contents into the tub at once.
- Thermostat, high-limit or temperature sensor replacement. When the control cuts heat early or never enables it.
- Control board replacement. When the heater and sensors test fine but the drying stage is never commanded.
When to book
Book when the dishes are wet on a heated cycle with rinse aid topped up and the dishes loaded with space between them, or when the tub itself is cool at the end of a heated cycle. If plastics are the only wet items on a condensation-drying dishwasher, that is normal and does not need a visit. The diagnostic is $89, waived if you proceed. If you are unsure which drying system your model uses, tell us the model number and we will say before booking. Dishwasher repair covers the rest.
Questions
My new Bosch leaves water on the plastics. Is it faulty?
Almost certainly not. Condensation drying relies on dishes holding heat, and plastic does not. Rinse aid and an Extra Dry option help; some droplets on plastics are expected.
Does rinse aid really matter?
Yes. Manufacturers list it first for drying problems. It lowers surface tension so water sheets off instead of beading, which matters most on condensation-drying models.
The dishes are dry but the tub and door are wet. Is that a problem?
On condensation models, no; that is where the water is meant to end up. On fan-vented models, puddles on the inner door can mean the vent is not clearing steam.
Can a dishwasher stop heating and still wash?
Yes. Many models finish the cycle with cool water, so the first symptom is wet, sometimes greasy dishes rather than a fault code.
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Reviewed 2026-09-24.
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