Dishwasher Repair

In order to get the best results out of your dishwasher, let’s take a quick look at how a dishwasher works:

In the beginning of the cycle, the dishwasher will take on the water. Then it will start agitating that water and at one point will introduce detergent into the unit. Following the main wash, the water will be drained and new water will be introduced to rinse the dishes. Finally, drying cycle will complete the process.

So why when we open dishwasher the dishes are not clean? The answer is not that simple. The main thing that must take place in the dishwasher is the chemical process. Some of us may still remember from chemistry class we need water (a universal solvent that dissolves many substances), detergent (surfactants lower the surface tension of water), temperature (promotes movement of the molecules) and agitation (speeds up the dissolution of a solute).

Let’s examine these components:


Unfortunately, not all water created equal. Our water supply varies from area to area. The biggest opponent of good results is water hardness. Hard water contains minerals that do not dissolve in water and deposits itself on dishes and dishwasher causing white film buildup. So the easiest way to combat this nuisance is to add a cup of white vinegar to the dishwasher before each cycle. Vinegar is a simple solution to dissolve those hard minerals that normally do not dissolve in water.

Water Temp

For good washing results, most manufacturers recommend water temperature to be at 120 F. If the water temperature is below the requirement then the water will not be able to dissolve the detergent and the hard minerals in the water. Make sure to run hot water in the sink near the dishwasher to purge any cold water out of the pipes before every cycle.


In 2010, many local governments had band use of phosphates in detergents. That led detergent manufacturers to stop production of detergents containing phosphates in their products. In term poor cleaning results followed especially in households with hard water. Phosphates played an important role by dissolving hard minerals and stopping grime from re-depositing back on the dishes. However, many manufacturers developed new phosphate-free detergents using mineral oils with very good results. Cascade Complete Pacs and Finish Gelpacs are good examples of a new type of detergent.

If you are still having trouble after using these tips above contact us for your dishwasher repair needs.


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