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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

"Their workers who installed the windows were excellent. Our experience with the sales rep was pleasant. He did not pressure us. He made suggestions that saved us money."

Kristin Palmer
Oct 20, 2022

"I would give everyone involved in the whole process a 10 out of 10. With the exception of the window installation crew. They get an 11 out of 10. I can't express in words what an excellent job they did. They went above and beyond."

Don Smith
Oct 25, 2022

"Although it is a process and doesn't happen overnight the wait is worth the end results. A Representative will come to your home and walk you through the entire process. It does take a few weeks from the time they send someone to your home to personally measure your windows to the time the factory specifically custom cuts your windows and ships them out. However, the end result is overwhelmingly satisfactory. The crew sent to install them were professional, cleaned up after the job was completed and did the job in half the time they thought it would take. Highly recommend!"

Kimberly Baugh
Oct 27, 2022

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