How New Window Technology Increases Energy Efficiency

Replacing your old windows with new Energy Star windows can help seal drafts

. But stopping heat loss by stopping air flow is only the beginning of the ways energy efficient windows lower your utility bills. Here are a few of the other ways energy efficient windows work their magic:

Special coatings. Energy efficient windows are treated with coatings that reflect infrared and ultraviolet light, which helps keep heat in during the winter and helps keep heat out during the summer. These coatings also protect the interior of your home from sun fading you carpet or furniture.

Additional insulation with non-toxic gas. Most energy efficient windows are double pane windows, consisting of two panes of glass with a narrow space between them. This space is then filled with an insulating, non-toxic gas like argon or krypton, offering heat insulation vastly superior to old-fashioned single pane windows.

How To Know If You're Choosing the Right Window

Double pane windows will almost always be more energy efficient than single pane windows, but to know you're truly picking the right window, you'll need to look at more than that. Take a close look at the Energy Star label. Two numbers are particularly important. Start with the U Factor, which is a measure of how well the window prevents heat from escaping. The lower the number the better. Next, consider the Solar Heat Gain Coefficient (SHGC), which is a measure of how well the window insulates your home from the sun's heat. SHCG's range from 0 to 1, and like the U Factor, lower numbers are better.

Energy efficient windows are remarkably constructed, and bringing their technology into your home can dramatically reduce your energy costs. Look closely at the label to make sure you're choosing the best windows for your home, and you won't be disappointed.

by: QW HON

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