When a radiant barrier is installed in an enclosed air space, such as in a wall or ceiling joist space, it is called "reflective insulation." When a radiant barrier is installed in this way a calculation can be made to determine the "effective" R-value of the product. Keep in mind, the calculated effective R-value of the product will vary depending on the direction of heat flow (up, down, sideways) and the size of the enclosed air space. Be aware that anyone claiming an effective R-value for a reflective insulation product is making a very specific assumption about how the products is installed and exactly how much enclosed air space is next to the reflective surface. Such claims can be very misleading. The performance and long-term cost-effectiveness of the product depends on number of factors, including where the product is installed, how the product is installed, and the amount of existing insulation currently in the home.
energy efficient products
ENERGY STAR products are independently certified to save energy without sacrificing features or functionality. Saving energy helps prevent climate change. Look for the ENERGY STAR label to save money on your energy bills and help protect our environment.
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energy savings at home
Improving your home's energy efficiency with ENERGY STAR can help to lower high energy bills, improve comfort and reduce greenhouse gas emissions. Learn about the many ways to save in your home and track your progress with "My ENERGY STAR" - your new dashboard to savings.
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energy efficient new homes
A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict requirements set by the US EPA. ENERGY STAR certified homes use 15-30% less energy than typical new homes while delivering better comfort, quality, and durability.
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