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Energy Savings Options :: Energy Star Windows
Energy Star Windows:
How to Buy Energy Star-Rated Windows
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Energy Star windows and the Energy Star rating system make it easier for consumers to identify and purchase energy-efficient windows, doors and skylights.
By selecting Energy Star window products, heating and cooling costs can be cut, while simultaneously creating a more comfortable and controlled indoor environment.
According to the U.S. Environmental Protection Agency (EPA), Energy Star labeled windows are twice as efficient as the average window produced just a decade ago. To learn more about energy-efficient windows, including various performance factors, keep reading.
To achieve optimum energy savings and household efficiency, the Energy Star program suggests keeping a few factors in mind when shopping for and choosing windows, skylights or doors. Performance is based on the following factors:
U-Factor
U-Factor is the rate of heat transfer either from your home or the outside through your window, door, or skylight. A lower U-factor means less heat is transferred.
Solar Heat Gain Coefficient (SHGC)
SHGC is how much heat your house gains from the sun. A lower SHGC results in less heat gain from the sun. Typically, homes with numerous windows or south-facing windows tend to have a higher SHGC rating.
Local Climate
Windows, doors and skylights marked as Energy Star-efficient, are tailored to fit the energy needs of the country's four major climate regions or zones. These are Northern, North/Central, South/Central, and Southern. Typically, your local store or contractor will sell the appropriate windows for your region.
NFRC Ratings
All Energy Star windows, doors and skylights also bear a label from the National Fenestration Rating Council (NFRC), which provides independent energy performance ratings by product for Visible Transmittance, U-factor, and Solar Heat Gain Coefficient.
Manufacturers
Numerous manufacturers offer Energy Star windows, skylights or doors. Such as Jeld-Wen (Klamath Falls, OR), Pella Corp. (Pella, IA), Marvin Windows (Warroad, MN), Andersen Corp. (Bayport, MN), and Pilkington North America (Toledo, OH), just to name a few. You can order directly from the manufacturer or through your local contractor.
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EnergySavingsOptions.com :: Energy Star Windows