Why does my dishwasher cycle run so long?

Efficient dishwashers run longer to save water and energy — typical cycle time is approximately 2½ hours but can vary based on selections. A water heater setting of 120°F (49°C) is best, as the dishwasher will delay longer while heating cooler water, and some options such as Heat Dry add approximately 45 minutes to the cycle. If you need faster results, try the Quick Wash cycle, which takes approximately 1 hour. (Page 12)