An automatic icemaker costs approximately 2 cents per day to operate. The type and amount of insulation the unit has, combined with the efficiency of the fan motor, condenser and other internal features, will determine the level of energy efficiency you can expect. Determine the unit size that suits your requirements, then compare Energy Guide labels on different brands and models. Your freezer should be set at 5oF. It will use less energy if you keep it full. Self-defrosting models are more convenient, but they require more energy to operate.
Chest freezers use less electricity than upright freezers.
Buy the freezer size that best suits your family s needs. Buying too large a freezer will result in unnecessarily higher energy costs. According to the Association of Appliance Manufacturers, a fully-loaded dishwasher uses less energy than would be required if the same amount of dishes were washed by hand. Wash full loads whenever possible. If available, use energy-saving cycles.