By the numbers: Dishwashers

4 → Gallons of water used per cycle by an EnergyStar dishwasher

6 → Gallons used by a regular dishwasher

20 → Gallons potentially used to prerinse dishes before putting in the dishwasher

5,000 → Estimated gallons per year saved by using an EnergyStar dishwasher instead of hand washing

$40 → Approximate amount saved annually by switching to an EnergyStar model

Source: energystar.gov.