Breaking Down Window Energy Efficiency Ratings

When you're in the process of shopping around for new windows, you will most likely notice the yellow energy efficiency sticker attached to each one. This sticker may be very confusing to you if you are unfamiliar with the different rating factors on it. Here's what you should understand about the ratings to know which window is best. U-Factor The window's U-factor translates to how well the window prevents hot air from seeping outside of your house.