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Everything You Need to Know About Your Windows’ SHGC Rating

When shopping for energy-efficient windows, make sure you understand their energy performances ratings. These are essential in selecting which window units are a perfect fit for your home and for the region where you live. Today’s blog focuses on one of the most important ratings to look out for, which is the solar heat gain coefficient (SHGC).

Energy-efficient Windows

What Is the SHGC?

The SHGC is an energy performance rating that refers to the ratio of solar radiation passing through the whole window assembly composed of the glazing, window frame and spacers separating the glass panes. It ranges between 0 and 1, with the latter indicating the maximum amount of solar heat allowed.

Why Consider the SHGC Rating?

Knowing how windows behave relative to sunlight and solar heat allows you to choose the most appropriate units for your home, which often depends on the local climate. For instance, windows that allow for a larger amount of solar heat to pass through work well in regions where extra warmth coming from the sun is deemed beneficial.

What’s the Best SHGC Rating for Your Windows?

Discussing the matter of energy performance with your windows installer helps determine the exact SHGC rating for the replacement windows you are going to purchase. Generally speaking, however, an SHGC rating of less than 0.40 is recommended, especially in the Midwest where both heating and cooling are required.

Other factors to consider when determining the most favorable SHGC ratings for your replacement windows include your home’s orientation and external shading. There are other energy performance ratings you should also consider, including the U-factor, air leakage and visible transmittance.

At Renewal by Andersen® of Southwest Missouri, we offer high-quality ENERGY STAR® windows that help slash your energy bills. With features like High-Performance™ Low-E4® glass and Fibrex® framing material, you can enjoy consistent indoor comfort while saving on energy. Call (417) 268-9301, or fill out our contact form to schedule a free consultation.

Reviews

"Quality product, quality workmanship. Everyone I interacted with at Renewal by Andersen of SW Missouri had pride in their work from sales to financing to project oversight to installation. It must be a great company to work for because that shows in the professionalism of the staff. Best of all, they want happy customers and go out of their way to make sure that happens. Yes, I love my windows (but I knew I would--it's a great product). Friendly, helpful, easy financing, and yes--they pass costs on to the customer for this, but it meant that I was able to get the windows I wanted and needed for my creaky, lopsided old house. Couldn't be more pleased."

Keren
Aug 11, 2023

"The company representative who met with me initially was very direct, told me how the process would go, explained about why Anderson windows are of such good quality and how they stand by their products and their workmanship. My 3 windows arrived when they said they would, & the men who installed them were very professional, polite, & efficient. They showed me how the windows work and left the room as tidy as it was before they did the installation."

Judith Peavey
Aug 14, 2023

"We just had our windows done by Renewal. They kept us informed about the progress of manafucture & installed at the approximate date. Good qualtity & if you didn't know that there were screens on the windows you would think they were missing. Very clear view. Great in this hot weather, the house stays cool."

Jerry C
Aug 22, 2023

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