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Tips for Replacement Window Buyers from the NFRC
by AJ Fanter
Refacing Cabinet Columnist
Formed in response to the 1970's energy crisis, The National Fenestration Rating Council is a nonprofit organization that tests and rates the energy performance of windows, skylights, and doors to make it easier for consumers to select the right replacement windows for their homes.
If you're in the market for replacement windows, here are some guidelines from the National Fenestration Rating Council (NFRC) that are designed to help you choose the most energy-efficient home replacement windows.
Use the NFRC Label
In addition to testing and rating fenestration products, the NFRC runs a certification and labeling program. These labels will help you to compare replacement windows based on their actual performance. While each label features five key comparison areas, when it comes to the comparing the energy efficiency of home replacement windows the two most important ratings on the NFRC label are the U-factor and the Solar Heat Gain coefficient.
U-Factor, Solar Heat Gain, and Your Replacement Windows
By comparing the U-factor, which is the rate of heat loss, and the Solar Heat Gain Coefficient, the measure of heat which comes in, you can choose the optimum replacement window for your home. For example, if you live in a cold area you'll want a replacement window that features a low U-factor so you lose less heat; whereas if you live where it gets hot, you'll need a replacement window with a low Solar Heat Gain Coefficient (SHGC) so your air conditioning doesn’t have to work quite so hard.
More Than One Label
In addition to the SHGC and the U-Factor, watch for the U.S. Department of Energy's (DOE) Energy Star Label when shopping for home replacement windows. This rating system takes into different climate zones and identifies the most effective replacement windows for your particular climate zone.
More Replacement Window Tips
In addition to comparing heat gain and loss and knowing which replacement windows are recommended by the DOE for your climate zone, you may also wish to compare the condensation resistance as well as the air infiltration to make sure that your window resists condensation build-up and stops cold air from leaking in from the edges and frames.
By following these helpful tips, you'll be on your way to choosing the most energy-efficient replacement windows for your home.
Source
About the Author
AJ Fanter is a freelance writer based in Reno, NV.
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