What’s a Kilowatt?
When you use electricity to cook a pot of rice for 1 hour, you use 1,000 watt-hours (1,000 Wh) of electricity! One thousand watt-hours equals 1 kWh. Your utility bill usually shows what you are charged for the kilowatt-hours you use. The average residential rate is 11.04 cents/kWh. A typical U.S. household consumes about 11,800 kWh per year, costing an average of $1,297 annually.4
Most of the energy used by a dishwasher is for water heating. The EnergyGuide label estimates how much power is needed per year to run the appliance and to heat the water based on the yearly cost of natural gas and electric water heating.
Dishwasher Water-Saving Tips
• Check the manual that came with your dishwasher for the manufacturer’s recommendations on water temperature; many have internal heating elements that allow you to set the water heater in your home to a lower temperature (120°F).
• Scrape, don’t rinse, off large food pieces and bones. Soaking or prewashing is generally only recommended in cases of burned- or dried-on food.
• Be sure your dishwasher is full (not overloaded) when you run it.
• Avoid using the "rinse hold" on your machine for just a few soiled dishes. It uses 3-7 gallons of hot water each use.
• Let your dishes air dry; if you don’t have an automatic air-dry switch, turn off the control knob after the final rinse and prop the door open slightly so the dishes will dry faster.
$ Long-Term Savings Tip
When shopping for a new dishwasher, look for the ENERGY STAR label to find one that uses less water and energy than required by federal standards. They are required to use 5.8 gallons of water per cycle or less—older dishwashers purchased before 1994 use more than 10 gallons of water per cycle.