How much can radiant barriers save?
Since everyone’s home and lifestyle are different, we can’t precisely calculate your personal savings from attic radiant barriers. However, it’s reasonable to expect that an attic radiant barrier can save 8-12 percent of your annual cooling costs in the Southeast. Savings from an attic radiant barrier depend on the amount of heat the roof and attic contribute to your home’s cooling load. (“Cooling load” is the total amount of heat your air conditioner must remove to maintain comfortable indoor temperatures.) In general, the more energy efficient the rest of your home is, the larger the percentage of energy you save from an attic radiant barrier because the roof and attic make up a larger portion of the cooling load.
