The National Fenestration Rating Council (NFRC) helps consumers identify energy-efficient replacement windows that will perform well in a particular climate. They do this by providing labels on window units that identify performance standards and how that particular unit rates in these standards. Different homes will have different needs so it’s important to understand these ratings to find a window that’s 100% right for your home.
In today’s post, Renewal by Andersen® of Cape Cod, a top local window contractor, explains how to judge the energy performance a window.
U-Factor or U-Value
You can think of the U-factor as a fancy way of measuring the insulation ability of windows. The higher this number is, the better the window will resist heat transfer, and thus the more energy-efficient it is.
Solar Heat Gain Coefficient (SHGC)
As the sun shines on a window, heat and light is transmitted through the glass and into your home. The SHGC can tell you just how much of the sun’s heat can penetrate through the window glass. The lower the SHGC is, the better the window is at blocking heat and keeping your home cool.
One of the most common reasons homeowners look for a replacement window company is window failure due to air leakage. Air leakage ratings from the NFRC are measurements of how well the unit can withstand potential problems that could lead to leakage and air loss.
The Department of Energy identifies replacement window products that meet energy efficiency standards with its ENERGY STAR® certification program. When looking for windows to purchase, limit your search to products that bear this green star logo.
At Renewal by Andersen® of Cape Cod, our replacement window products are all highly rated by the NFRC to help you build a more energy-efficient home. Call us today at (508) 936-1171 or fill out our contact form to schedule a consultation or request a no-obligation estimate on new replacement windows. We serve homeowners in Cape Cod and nearby areas.