Window Energy Efficiency

What You Need To Know To Make The Best Buying Decision.

If you’re shopping for replacement windows in Lombard, Elmhurst, and the surrounding Western Suburbs, energy efficiency is hands-down one of the most important things you should consider. Energy efficient windows will not only make your home more comfortable during the frigid Illinois winter, but can also considerably cut your energy costs.

So just what, exactly, makes a window energy efficient? It’s not one thing in particular, but a combination of features working together—a well-insulated frame, quality glass, good weather stripping, and more.

Honestly, describing the components of an efficient window in detail is pretty complicated, so here’s all you need to know: If you want to see how efficient a window is, just look at the NFRC label on its glass pane.

The picture below explains the NFRC label ratings, along with how windows with good NFRC scores benefit your home. For reference, as of 2016, Energy Star has determined that windows with a U-factor of 0.27 and air leakage rating of 0.30 or less are considered optimal for Illinois weather.

Energy Efficient Window Replacement

NFRC / Via


Ready To Cut Energy Costs?

If you’re looking for energy efficient replacement windows in Villa Park, Naperville, Glen Ellyn, and the surrounding Western Suburbs, contact The Door Store today for an accurate, no-pressure quote. We sell and install the industry’s most efficient windows for a fair price. We would be happy to discuss your project with you!

“Thanks so much for the great job done on our windows - from the measuring, to the installing, to the finishing touches! Thanks for a job well done! ”

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53 W. Roosevelt Rd.
Villa Park, IL 60181
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