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What is U-Value and solar heat gain coefficient on glass packs of windows?

April 26, 2017coefficient gain glass heat packs solar u-value Windows

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What is U-Value and solar heat gain coefficient on glass packs of windows?

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The minimum recognized by Energy and Utilities Companies across the country is .35 in either category to certify as an Energy Star Window. The lower the number the more energy efficient All of the brands we use qualify with some lower than .30 which qualifies them for the energy tax credit.