Cut down on your home’s energy use (and brighten your rooms) by replacing traditional incandescent lights with energy-efficient compact fluorescent bulbs.Fluorescent bulbs use 75 percent less electricity that incandescents and can last up to 10 times longer. Once available only in spiral shapes, compact fluorescents come in more aesthetically pleasing versions these days.

Keep heat in the house-where it belongs- by adding insulation to your attic. The good news is that there are a number of environmentally friendly products you can use. Insulation made from recycled blue jeans, soybeans or newspapers is available at home-improvement stores or on-line. While these green products are all slightly more expensive than traditional fiberglass insulation, they are worth the money: you’ll avoid breathing in stray fibers.

Never return to a chilly house or wake up to a cold bedroom in the morning again. A thermostat takes just 20 minutes to install and can be adjusted for several settings throughout the day to meet your heating needs.

If you plan to punch up a room with a fresh coat of paint, why not brush insulation onto the walls at the same time? Mix a nontoxic ceramic powder into your point to reduce the amount of heat passing through your walls to the outside. The ceramic particles in the additive create a radiant barrier that reflects heat back into the room, and once you put it on, the walls are insulated for good.

An insulating wrap acts as a safeguard. Place the precut foam lengths over cold-water pipes in crawl spaces, the attic and overhead in the basement to prevent them from freezing. And don’t forget about the hot-water pipes. Hot water loses heat as it gets to its destination—your shower or sink. Wrapping the pipes keeps more of the heat in, so you can start your shower a little sooner.

You pay good money for heating oil and natural gas—but where does most of the heat wind up? Near the ceiling. Redirect it back into the room with a ceiling fan. Move the fan’s switch to reverse, so the blades run counterclockwise. This pushes the warmth away from the ceiling, down around the walls and into the living space. Note: Always set the fan on low, or it will actually cool the heated air.) Don’t have a ceiling fan? Take advantage of bright, sunny days by cleaning windows and removing outdoor screens to let in the maximum amount of sunshine and warm rooms naturally.