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What’s a Good SHGC Rating for Your Windows?

It can be noted that when replacing your doors, skylights or windows, experts would always advise checking the solar heat gain coefficient (SHGC) ratings of the products you’re getting. This allows you to understand how much solar radiation can pass through your home features. Many may still ask whether it’s really necessary. We’ll explain here why.

 Good SHGC Rating For Your Window

What Are SHGC Ratings?

SHGC ratings of window products are determined by the National Fenestration Rating Council® (NFRC) following the necessary tests the organization runs. The U.S. Department of Energy and the Environmental Protection Agency (EPA) use the SHGC ratings in assessing the energy efficiency of the windows for product certifications and federal incentive and rebate programs. 

These classifications are used to guide people in choosing the right windows, like energy-efficient windows. Along with other information, such as condensation resistance, visible transmittance and U-factor, these are indicated on product labels so that people can easily refer to them and make comparisons of the different window items.

The Ideal Rating for Your Windows

  • Southern climates relying on cooling, their windows should have an SHGC rating of less than 0.27.

  • In the mixed climates of the south and central regions, windows and skylights should have an SHGC rating of less than 0.30.

  • In the mixed climates of the North and Midwest, the SHGC rating for windows and skylights should be below 0.40.

  • In the colder climates of the North, a window’s SHGC rating is actually not as important as the U-factor. Remember that if air conditioning is used from time to time, the SHGC rating of windows should be less than 0.40. If air conditioning is not used, windows should have an SHGC rating of 0.30 to 0.60.

To learn more about a wide selection of windows, call Renewal by Andersen® of St. Louis at (314) 332-2364, or fill out our contact form. We serve multiple areas in Missouri, including Chesterfield, St. Charles and nearby areas.

Reviews

"Extremely satisfied, definitely will use again, worth every penny!"

B. Huggins | RbA of St. Louis, MO - Maryland Heights

"They did exactly what they promised. They showed up on the day they were scheduled put in the doors and window we ordered. The installers were friendly, efficient and cleaned up as promised. We were happy with the entire process!"

R. Daw | RbA of St. Louis, MO - Maryland Heights

"We had a large picture window and two side windows replaced. Everyone from the person who took our order to the installers were top notch. We got exactly what we wanted. Granted, we had to wait a few months, just like you do for everything these days, but we were told that up front. The windows were well worth the wait. We've replaced windows before by going to home maintenance stores. Don't waste your money on those. Our Renewal by Andersen windows look great, they operate like a dream, and are worth every penny. Quality through and through."

C. Roberts Owens | RbA of St. Louis, MO - Maryland Heights

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