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What’s the Optimal SHGC Rating for Your New Windows?

When selecting replacement windows for your home, it’s important to consider various factors that contribute to their overall efficiency and performance. The solar heat gain coefficient (SHGC) rating is one of those crucial factors, as it plays a significant role in determining how well your windows can manage heat entering your home and affect your energy consumption and indoor comfort.

Optimal SHGC Rating for Your New Windows

What Does SHGC Rating Mean?

The SHGC rating measures the amount of solar heat that a window allows to pass through. It’s expressed as a number between zero and one. A lower SHGC indicates that the window is effective at blocking heat from the sun, while a higher SHGC means that more solar heat is transmitted indoors.

Factors to Consider

The ideal SHGC rating for your new windows depends on several factors:

  • Climate. In warmer climates with intense sunlight, such as extended summers, windows with lower SHGC ratings are ideal. This will keep solar heat out and lessen cooling system stress. However, a slightly greater SHGC can contribute to passive solar heating in the winter in colder climates.
  • Window Orientation. The SHGC grade depends on the direction of your windows and sliding patio doors. South-facing windows receive more direct sunlight, so pick ones with a lower SHGC to avoid overheating. East and west-facing windows receive sunlight during cooler hours; hence, they may have a greater SHGC.
  • Energy Efficiency Goals. If reducing your cooling costs is a priority, opt for windows with a lower SHGC to minimize solar heat gain. For those seeking a balance between heat gain and passive solar heating, a moderate SHGC might be more suitable.

Benefits of Choosing the Right SHGC Rating

Windows with a balanced SHGC rating ensure a more consistent indoor temperature. You’ll experience fewer hot spots near windows and enjoy a more comfortable living environment year-round. Efficient windows with the right SHGC rating contribute to a reduced carbon footprint by decreasing energy consumption. This helps conserve natural resources and lower greenhouse gas emissions.

We Can Help

Renewal by Andersen® of Wyoming can be counted on when you need replacement windows or patio doors! Call us at (307) 472-2199 or fill out our online form to schedule a consultation. We serve clients in Laramie and Cheyenne, WY, and the surrounding communities.


"This crew was every thing they said. They showed up on time, did a professional job on the install. I was there and they answered every ?? I had. My mane concern was the sealing of the door being that it was on north side of the house. We could tell a big difference after they were done. Thank you Renewal by Andersen doors/ windows of Wyoming."

Tony Geffre
Apr 5, 2019

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