The Energy Star logo is added to consumer products that meet the Environmental Protection Agency’s standards for efficient design and performance. However, not all Energy Star products are appropriate for every region of the country. This overview can help you find replacement windows that are right for your home:
Determine Climate Zone
The EPA divides the nation into four major climate zones. Zone 1 (Northern) makes up the upper half of the United States plus Nevada, Colorado, and Utah. California and the South fall into Zone 2 (North-Central) or Zone 3 (South-Central). Zone 4 (Southern) is the hottest climate zone and is made up almost entirely of Southern Arizona, Texas, and Florida. Make sure all of the Energy Star windows you purchase are designed for your climate zone—these windows provide the highest level of efficiency for your home.
Compare Efficiency Ratings
Be sure to compare the efficiency ratings of several replacement windows once you find your climate zone. This analysis helps you choose between similar windows that are right for your climate. The two most important ratings to look for are Solar Heat Gain Coefficient (SHGC) and R-value. SHGC represents a window’s ability to allow in heat, so a low SHGC is preferable. R-value, on the other hand, measures a window’s ability to slow down the transfer of heat, meaning a high R-value rating is ideal.
Get in touch with your local replacement window specialist if you have more questions about Energy Star ratings. A local professional contractor like California Glass & Window can help you choose the right Energy Star windows for your home. Plus, we can install your energy-efficient windows professionally and properly. Visit us online or call us today at (714) 434-8650 for a free in-home estimate.