operating cost of dishwashers

It is likely that dishwashers use less water to wash dishes than doing the same number by hand. Dishwashers do a better job of killing germs because they use hotter water than you can use by hand. The energy rating of a dishwasher is based on use of hot water because about 80% of the energy is for heating the water rather than running the dishwasher itself. Therefore, look for features that reduce water usage. Consider purchasing a dishwasher that uses fewer gallons during the different cycles since they will cost the least to operate.

Compare both the Energy Guide labels & the Energy Star information. Today's Energy Star dishwasher can save 20% compared to standard models. Select a model w/ a heating element. It can boost the heat of the water used in the machine to 140°F, the temperature required to clean effectively. Then you can lower your water-heater thermostat to 125°F & save energy. Each 10-degree reduction in the water heater temperature setting will save you up to 13% of your water-heating bill. A lower setting will also reduce the danger of scalding. Also check to see if the dishwasher has an energy efficient no-heat drying cycle. It costs less to air dry dishes.

consumer tips

• Dishwashers have two classifications: compact & standard. Compact models use less energy but hold fewer dishes. A compact model may actually result in greater energy use if you have to operate it more frequently.
  
  
• Choose a dishwasher that has several wash cycle selections. You can then choose a "light or energy-saving" wash cycle & save energy by using less water & operating for a shorter period of time.
  
  
• Choose a dishwasher that has an air-drying cycle as well as a heat-drying cycle. Heat-drying elements use a considerable amount of energy; circulation fans for air-drying use very little.
  
  
• If your dishwasher has a booster heater, turn your water-heater thermostat setting to 125°F.
  
  
• Scrape instead of rinsing off large food pieces from the dishes. Soaking or pre washing is usually not necessary unless food is burned or dried on the dishes.
  
  
• Operate the dishwasher w/ a full load & select the energy-saving cycle when possible.
  
  
• Do not use the "rinse/hold" for just a few soiled dishes. It uses 3 to 7 gallons of hot water.
  
  
• An often overlooked convenience is a delayed-start control. It allows you to run the washer when you are asleep or at off-peak hours when utility rates may be lower.
  
  
• Be sure drains & filters are clear of food particles.