That translates into more than 2,100 gallons of water per year. By not prewashing, you save even more. The total water used by dishwashers varies greatly by brand and model, so compare the water use during similar cycles to get an accurate water usage comparison. Cycles Look for dishwashers that provide enough cycles to handle loads of varying dishes and amounts of food soil. This minimizes food odor.
Most dishwashers use one of two different methods to fill with water.
A metered fill uses a float to accurately measure the water level inside the dishwasher. This enables the dishwasher to fill to the correct level regardless of the water pressure. It also keeps the appliance from over-filling and, thus, wasting water. A times fill is said to be a less precise method, since water pressure variation can affect it. It is advisable to consider the type and size of dishes commonly used before shopping for a rack system to fit your needs.