No matter if you live in an older or a newer home, there's no reason you need to suffer through the winter or the summer. If your house doesn't have enough insulation, which is very common in homes built before 1980, bringing it up to current standards will make it more comfortable through the hot summers and cold winters. Also, you'll save anywhere from 10% to 40% on heating and cooling bills. After all, the amount of savings for upgrading insulation depends on many factors, for example where you live? what type of heating system you have? and how much insulation you'll add.