Proper attic insulation is an easy way to make your home more comfortable in all seasons. It will also save you money on energy bills. According to a study from the Boston University School of Public Health, every home in the U.S. should be insulated to meet modern building codes. But 90 percent of homes in this country do not have enough insulation. With proper attic insulation, your home will be more energy efficient and your bills will go down.