When most people think about energy efficiency, once they stop talking about solar panels, they usually get to windows. “My windows are so old,” or “They’re only single pane glass,” or “I need to replace them,” and so on, much if it fueled by the replacement window industry selling the energy savings. Unfortunately, in most cases, those savings just aren’t there, at least not at the level at which they sell them.
There’s a joke about window replacement that goes something like this: After her windows were replaced, a woman had yet to pay the bills she kept getting from the contractor who did the work. Finally, a year later, the contractor got her on the phone and asked her why she had not paid for them. Her response: “Do you think I’m stupid? Your salesman told me that in one year the windows would pay for themselves. It’s been a year!”
http://www.foxnews.com/leisure/2012/04/10/for-energy-efficiency-replace-your-windows-last/
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