Keep your refrigerator temperature between 36ºF and 40ºF and your freezer between zero and 5ºF. A lower setting can increase energy use. Use the “power saver” switch found on many five- to ten year-old refrigerators, unless the humidity is high. Purchase an ENERGY STAR rated refrigerator and apply for a rebate from Anaheim Public Utilities. Refrigerators operate most efficiently when they are full, but not overloaded. Over-packing the freezer can prevent cold air from circulating properly. Clean the dirty coils on the back or bottom front of your refrigerator to improve efficiency. Check your owner’s manual for maintenance instructions. Refrigerators at least 10 years old use much more electricity than newer models do. Though a new model will cost you money up front, it will save a great deal of money in the long run because of its increased efficiency. Leave enough space between the refrigerator and the walls. Trapped heat increases energy consumption because the air cannot circulate. If you are thinking about buying a new refrigerator, check the annual energy cost on the Energy Guide Label. Side-by-side refrigerators use approximately 7 to 13 percent more energy than similarly sized models with the freezer on top. When going on a vacation of three days or more, set temperatures higher if control is possible. Get rid of any older, second refrigerator. It costs you up to $120 a year to operate.