According to the U.S. Department of Energy (DOE), heat loss through windows can account for anywhere from 10% to 25% of a homeowner’s heating bill.  The DOE also says that in climates where air- conditioning is in steady use, energy-efficient windows and doors can reduce energy consumption by 10% to 15%.  Homeowners throughout Southeastern MA, South Shore MA, Cape Cod, and Rhode Island know the difference that quality windows make to their homes, in terms of energy efficiency and energy savings.