When it comes to energy efficiency, windows are frequently the determining factor when selling a home or remodeling an existing one. Depending on the time of year, about 25-30% of heating and cooling energy can get lost either through heat gain or heat loss, according to the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy.
Many homeowners worry about the looming costs, but new windows could eventually end up paying for themselves in energy savings.