Light Switch Remember to always turn off the lights when leaving a room. Turning off just one 60-watt incandescent bulb that would otherwise be on for eight hours a day can save about $15 per year.
Thermostat Install a programmable thermostat to automatically adjust your home's temperature when you're away or sleeping.
Heating Locate the heating thermostat on an inside wall and away from windows and doors. Cold drafts will cause the thermostat to keep the system running even when the rest of the house is warm enough. Set the thermostat as low as comfort permits. Each degree over 68° F can add 2-3 percent to the amount of energy needed for heating.
Air Conditioner Set your thermostat to 78° F, or as high as comfort permits. When the weather is mild, turn off the AC and open the windows.
Vents Close heating vents and radiator valves in unused rooms. Make sure that drapes, plants, or furniture do not block registers for supply or return air.