Utility Bill Savings You Can Expect

The most commonly asked question about radiant barriers is "How much money can I save on my utility bill if I install a radiant barrier?"

Although RadiantGUARD® radiant barriers BLOCK 97% of radiant heat, your utility bills savings will vary because there are other forms of heat flow in a building that contribute to the total cooling (or heating) load.  Data varies by region.

Points from a radiant barrier study performed by the Tennessee Valley Authority help to point out the utility bill savings you can expect:

• All the radiant barrier configurations tested yielded sizable percent savings (17%, based on Energy Star Evaluation) and statistically significant reductions in summer attic heat transfer compared to the non-radiant barrier test case.  Also, as the ambient temperature increased, the savings also increased.
• The radiant barrier placed on top of the attic floor insulation was the best summer performer.  It consistently showed heat flux reductions compared to the non-radiant barrier test case of about 40% percent for almost all ambient temperatures and even showed savings (17% percent) during mild temperature and night summer conditions.
• All the radiant barrier configurations provided statistically significant reductions in winter attic heat fluxes in many, but not all, situations. The percent savings during night hours and during below 35 degree conditions, when heating loads were the highest, were usually sizable (from 6 to 23 percent) and the differences between the radiant barrier configurations and the non-radiant barrier test case were often statistically significant during these conditions.