Author: Green Talk
Website: http://feedproxy.google.com/~r/green-talk/jRYI/~3/9ng_WEdmPi…

Photo from Department of Energy.
I bet you just got used to hearing about double pane, Low-E glass, Argon filled windows. You know the ones. The ones labeled as ENERGY STAR? Now, there is a new babe in town getting a lot of attention from the Department of Energy. The R-5 window has all the right curves and significant energy savings compared to its distant cousin, the ENERGY STAR window. Yep, this R-5 is energy efficient beauty with triple panes of either high solar-gain, Low-E Glass, Argon/Krpton Gas or high solar-gain, Low-E Glass, Argon/Krpton Gas, depending on your area of the country. According to the DOE,
“Common ENERGY STAR windows only have an R-value of 3. Increasing the R-value from 3 to 5 reduces average heat loss through the windows by 40% and saves consumer money on energy bills.”
But why are the R-5 windows the darlings of the DOE?
“Windows in the U.S. account for 30% loss of building heating and cooling energy, representing an annual…
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