First, make sure your windows are keeping out drafts. During the winter, drafts let out heat and during the summer they let out the cool air from your air conditioner. Put a layer of newspaper in between the windowsill and the jam by opening the window, laying newspaper strips down, and shutting the window. The newspaper will block drafts.
You can also block draft by covering cracks in the window frame with clear packing tape.
Pull the refrigerator at least a few inches away from the wall. This keeps the parts from overheating. This makes the refrigerator’s job easier, which uses less electricity.
Replacing all of the 60 watt bulbs with 13 watt CFL (squiggly bulbs). These bulbs not only save energy, but can save you up to $35 or more. They use up to 75 percent less energy and last years longer than regular bulbs.
Set the thermostat to 60 degrees to save on heating and cooling.