One of the simplest ways to save a little money and energy is to let your dishes air dry after they are washed in the dishwasher. Simply use the wash only cycle and open the dishwasher door as soon as the cycle finishes. The dishes will be very hot and will dry quickly.
If you are still using the dry setting on your dishwasher and find that the dishes are wet when the cycle is complete, first check that you really programmed the washer for the heat dry setting, then check to see if the rinse aid dispenser needs filling, evaluate how well the dishes are loaded, and make sure a large item doesn’t block smaller items.
Here are some additional problems to check:
Did you use the proper amount of detergent? Too little or too much detergent can have an affect on how well dishes dry.
The next things to check are the filters, drain valve, drying fan, heating element, and the thermostat. Sometimes a clogged filter will prevent all the water from being able to exit the unit. Clean or replace clogged filters. A faulty drain valve that leaves too much water in the cabinet can be to blame. Is there too much standing water left in the unit after the dry cycle is complete? Check for blockages at this valve.
Some dishwashers have a fan that circulates the cabinet air to help dry the dishes. If the fan is not working properly, you need to replace it. At the bottom of the dishwasher is a heating element that warms the air in the dishwasher. The increased temperature speeds up the evaporation process and decreases the drying time. Visually inspect the element and look for any burned or broken areas on it, and if it’s burned out or if you can’t measure continuity with it removed, it will need to be replaced.
There is also a thermostat that measures the water temperature and drying temperature. If the thermostat is faulty, the cycles may not complete properly. If it’s faulty, you need to replace it. You may want to unload the dishes in the bottom rack first so that any water left pooled on dishes in the top rack won’t spill onto the bottom rack’s dishes.