Window Ratings
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The [[Energy Star Windows|Energy Star]] certification provides assurance that a window is able to limit heat transfer and control the amount of solar gain that enters into a home through the window. Energy Star qualified windows lower energy consumption and reduce greenhouse gas emissions through their ability to control weather penetration and heat transfer. Energy Star windows are certified based on the ratings of the National Fenestration Ratings Council but they do not include all the NFRC's component ratings. | The [[Energy Star Windows|Energy Star]] certification provides assurance that a window is able to limit heat transfer and control the amount of solar gain that enters into a home through the window. Energy Star qualified windows lower energy consumption and reduce greenhouse gas emissions through their ability to control weather penetration and heat transfer. Energy Star windows are certified based on the ratings of the National Fenestration Ratings Council but they do not include all the NFRC's component ratings. | ||
− | Windows which receive the Energy Star label are assessed according to the NFRC's ratings for U-Factor and solar heat gain coefficient but do not take into account the additional ratings -- Air Leakage, Visible Transmittance and Light to Solar Gain. ENERGY STAR® windows are accepted by many governments as windows products that make the buyer eligible for tax credits and rebates | + | Windows which receive the Energy Star label are assessed according to the NFRC's ratings for U-Factor and solar heat gain coefficient but do not take into account the additional ratings -- Air Leakage, Visible Transmittance and Light to Solar Gain. ENERGY STAR® windows are accepted by many governments as windows products that make the buyer eligible for tax credits and rebates |
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== Rating Component == | == Rating Component == |