Adequate home insulation makes a big difference in the size of your monthly utility bills. Upgrading the insulation in an older home built before energy efficiency was a major concern could be one of the best investments you will ever make. Even if your home is new and relatively “tight,” there may be some insulation upgrades you can make to save energy. As you consider ways to improve your home insulation, look at the following areas first. They will give you the best returns on your energy-efficiency investments.