THE GREATEST GUIDE TO COST-EFFECTIVE RENEWABLE ENERGY

eight. Fill Gaps Little gaps all-around windows, doors, and also other parts of the house add up. In reality, the EPA estimates that homeowners can save an average of fifteen% on heating and cooling costs (or a mean of 11% on overall energy costs) by air sealing their homes and adding insulation in attics, floors about crawl spaces, and basements.E