The energy efficiency of replacement windows hinges on their energy performance ratings. These were developed by the National Fenestration Rating Council (NFRC) for the benefit of consumers. These ratings allow you to compare between window products and determine which ones can effectively keep warm or cool air in homes during winter and summer, respectively.
Two notable energy performance ratings to look for are SHGC and U-value. Many have come across these two terms, but many people think they are one and the same. In reality, they differ in many ways. Renewal by Andersen® of Sacramento, the trusted provider of specialty windows in the area, explains the difference between the two.
Differences Between SHGC and U-Value
SHGC refers to the solar heat gain coefficient, which measures the amount of solar radiation that enters and exits a home through its windows during different weather conditions. Its value ranges between 0 to 1. The higher the number, the more solar heat energy comes in through your windows.
On the other hand, U-Value, also known as the U-factor, is a rating that measures how much heat is lost as it passes through the window assembly, which includes the glass, sashes and frames. Its value ranges between 0.20 to 1.20, with the lowest indicating better window insulation.
Comparing Windows Through SHGC and U-Value Ratings
When finding the best double-hung or casement windows for your home’s energy efficiency needs, you have to take your local climate into account. That means checking their SHGC and U-value ratings. Windows with lower SHGC and U-value ratings are ideal in warmer climates because they reduce solar heat gain and keep your home insulated. The values for both ratings, however, may vary depending on where the windows are facing.
To get the most out of your replacement windows, don’t hesitate to get in touch with Renewal by Andersen® of Sacramento. Our team can advise you on the style of window that will have the most benefit to your home’s beauty, functionality and energy efficiency.
As a trusted residential window contractor in the area, we are committed to offering timely service that will give you a premier window product with little disruption to your schedule. Call us today at (916) 779-5800, or fill out our online form. We serve customers in Davis, CA, and the surrounding areas.
