Cover all liquids stored in your refrigerator. Moisture drawn into the air makes the refrigerator work harder. Locate refrigeration appliances away from heating equipment, vents and direct sunlight. Provide adequate space on all sides, and above, for ventilation. If you have a freezer or extra refrigerator, place them in a basement or other conditioned space, as opposed to a garage, where the unit will work much harder in warmer months.
Check gaskets around refrigerators and freezers by closing the door on a piece of paper.
If it pulls out with little or no drag, the seal probably needs to be replaced. Turn off all appliances, TVs, lights and radios when not in use. New energy-efficient lighting gives more light for less energy. They cost more initially, but are far less expensive in the long run. Don't preheat your oven unless your recipe uses baking powder.