DishwashersSeek out an Energy Star–rated dishwasher, which is at least 10 percent more efficient than other models. And choose a model with several wash cycle options, like "energy saver" and "no-heat drying."Your dishwasher is a stealth energy consumer: Between 80 and 90 percent of a dishwasher's energy consumption is tied to the water heater. Search for models that are water misers. Also look for a dishwasher with a booster heater, which allows your water heater to remain at the recommended 120 degrees and boosts the hot water for your dishwasher to 140 degrees, as needed to melt newer dishwasher soaps.Money- and energy-saving tips:Always run a full load.Scrape, don't rinse. Hand-rinsing dishes can use up to 20 gallons of water. Scrape food off the dishes and load. If your dirty dishes are going to sit overnight, use your dishwasher's rinse feature, which uses a fraction of the water needed to hand-rinse.For not-so-dirty dishes, use the light or energy-saving wash cycle, which uses less water and operates for a shorter period of time.Opt for "no-heat drying." The drying cycle consumes a lot of energy.