Energy efficiency in the use of freezers can be improved in the following ways. As with refrigerators, don't open the door unless you know what you want. A freezer is much more efficient if it is full. If you do not have enough food to fill it up, place milk cartons or other containers filled with water in the empty spaces. Keep the coils clean and check gaskets with the dollar bill test.
Clothes dryers are very large energy users.
There are quite a few energy conservation rules regarding this appliance. Make sure that the dryer is vented to the outside of the house. In contrast to dishwasher and washing machines, you should not overload the dryer as the clothes will dry faster if they tumble freely. Dry heavy and light items separately. Because the dryer maintains heat for a period of time after each load, it is more efficient to dry one load after another.