Modern dishwashers are designed to not only get your pots, pans, cutlery and dishes sparkling clean, but to do it using less water and energy. But even with the most efficient dishwasher, there are small tricks you can do to save even more energy when running a full load of dishes. If you have a booster heater in your dishwasher, lower the temperature by 20 degrees (to around 120 degrees). By lowering the temperature, you'll still get clean dishes, and it speeds up the whole dishwashing process. You save energy and time with this one simple trick.