How to Improve a Dishwasher's Performance

Loading your dishwasher correctly improves its performance.

If your dishwasher isn't cleaning as well as it should, you can take some steps to improve its performance. Regardless of your dishwasher's age, brand or model, following the basics of dishwasher operation will produce a noticeable difference when the dishwasher's cycle is done.

Things You'll Need

• Water testing kit
• Water softener
• Meat or candy thermometer
• Quality automatic dishwashing detergent

Instructions

1. Find out if your home has hard or soft water, using an inexpensive test kit if necessary. Hard water can leave residue and stains on your dishes, so install a water softener to help your dishwasher perform better.

2. Check your water heater's setting and determine the water temperature at the kitchen faucet. Turn on the tap, then place a meat or candy thermometer into the stream of hot water. Dishwashers perform best when the water is heated between 120 and 150 degrees; some have an element that boosts the water temperature to 140 degrees. To prevent scalding, set your water heater no higher than 120 degrees.

3. Run the hot water at the kitchen sink before starting the dishwasher, especially if your home has older plumbing. This ensures that dishwasher is using only hot water.

4. Load your dishwasher properly so it's not overloaded. Follow the recommendations in the owner's manual for your model.

5. Use a high-quality automatic dishwashing detergent and a rinse agent. As of July 1, 2010, phosphates were removed from automatic dishwashing detergents to meet regulations in several states, according to GE Appliances. This can affect the machine's cleaning ability, so choosing a top-rated detergent is important.

6. Use the proper amount of detergent. Base this on the size of the load, how dirty the dishes are, the water temperature and the hardness of the water.

7. Run the dishwasher on the appropriate cycle. For instance, extra-dirty dishes should run on a longer wash cycle. Consult your owner's manual to determine how to select the right cycle for your load.

Tips & Warnings

• Treating your dishwasher as any other mechanical appliance, with care, attention and common sense, will create the best performance.

• Water test kits can be found at home centers.

References

• GE Appliances: Dishwasher -- Poor Wash Performance
• The Family Handyman: How to Repair a Dishwasher