It’s inevitable that your kids will someday leave the nest, leaving you with more space than you need. Even if they return home for breaks, vacations, and holidays, paying to heat and cool those used spaces can quickly become expensive. “…Put the upstairs on its own heating and cooling unit,” suggests homeowner Stephanie. “When your kids are grown and gone, you don’t have to run the heat/air like you would if someone lived in the rooms.” If you can plan for the future, the extra expense now could save you a lot more down the road.