Heating and cooling account for 50 to 70 percent of the energy used in the average American home. And if your home is uninsulated or under-insulated, you’ll spend extra money trying to maintain comfortable temperatures.
According to the Environmental Protection Agency, you can save an average of 15% on heating and cooling costs (or an average of 11 percent on total energy costs) by air sealing your home and insulating attics, floors and crawl spaces.
How much money you will save may depend on a number of factors, including your family's lifestyle, your home’s design and your type of heating system, but you can expect big energy savings which translate to big dollar savings. In fact, the average homeowner can save about $780 per year.