Tune your furnace to peak efficiency. Your furnace uses more energy than any other appliance in your homes, so you want it to operate at maximum efficiency. Concentrate on doors, windows and other areas where cold air leaks are noticed. Homes may lose between 15 percent and 30 percent of their heat through air leaks. Insulation Insulate the ceiling of your home.
Ceiling insulation is the most cost effective type of home insulation.
Either a blown loose-fill or fiberglass batts will do the job. Insulate the walls of your home. After ceiling and floor insulation, wall insulation is an important conservation measure to include. Wall insulation is especially important in buildings that have a large amount of wall area compared to ceiling and floor area. Insulate the floor of your home if it is above a cold crawl space or basement.