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how much does replacing windows save in energy costs?

7 years ago

"Forget what the ads say. Saving money on your energy bill is not the reason to replace your windows--it could take decades to recoup the $8,000 to $24,000 you'll spend on new windows and installation. Energy Star-qualified windows can lower your energy bills by 7 to 15 percent. That's only $27 to $111 a year for a 2,000-square-foot single-story home with storm windows or double-pane windows, $126 to $465 if your home has just single-pane windows, according to Energy Star."

article goes on to advise homeowners about replacements,
but knowing that the thousands you invest in new windows will at BEST save you 15%...that is good info.
and that 15% is based on having single pane windows and upgrading to better window. low end savings would be double pane to double pane window.

window replacement companies make wild assumptions in selling windows. when better use of those thousands of dollars would be to air seal the house, including windows,
and mastic seal ductwork.

just info fwiw. don't expect that 40% isn't
going to happen.

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