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Summer Energy Efficient Windows – Part 6

By Solar energy | June 19, 2009

View out a window from a darken room. :en:Fort...
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Summer Energy Efficient Windows – Part 6

Window choices get complicated:
·    U-factor
·    Solar heat gain coefficient
·    Visible transmittance
·    Air leakage
·    Condensation resistance

Then there’s the climate issue! Homes in the Northeast need different windows than homes in the desert Southwest.

Trying to do your best at efficiency and economy could easily seem to require another college degree!

Could someone just TELL me which window I need?

Glad you asked.

The Department of Energy and the United States Environmental Protection Agency do all the testing and analyzing and rate windows according to their effectiveness.

The simplified version of window data analysis is found in an Energy Start label.

An Energy Star labeled window receives high marks for u-factor and solar heat gain coefficient.

And to find the best window for your climate check out energystar.gov.

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