Dishwashers come in a variety of styles, but there are only two basic types: permanently installed and portable. Built-in dishwashers are conveniently installed in the kitchen much like your oven and range. This type of unit is permanently connected to an electrical supply, a drain and a hot water supply. The portable dishwasher, which has castors, can be rolled into place, near your sink. This unit hooks up to The faucet for the water source and plugs into the nearest electrical outlet. It's less convenient, but if you move around a lot this type of dishwasher might be a good choice. Appliance store showrooms are the Best place to start looking for the model that suits your needs. Be sure to check out the new features and options which are available before deciding. You'll find everything from cycle delay to smart machines that know when the dishes are clean. An efficient dishwasher will use between seven and nine gallons of water per cycle. While the most efficient models will only use about five and a half gallons per cycle. The latest models have internal water heaters which increase the incoming water temperature to one hundred forty degrees, the ideal temperature for sanitizing dishes properly.