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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.
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.
"This was one of the best experiences I've ever had with a company. I ordered the windows in November and was told they wouldn't be here until July. That kind of delay the new norm so I wasn't a bit upset with the timeline. I was given an early present when they called to say the windows would be in at the beginning of May. We agreed on the week of May 16th to do the installation, there were 30 windows and a sliding door to install. They arrived promptly on their scheduled install date, and got straight to work. By the end of day one, they had all the upstairs windows complete and their work was incredible. Day two came with more of the same, the crew showed up promptly, got straight to work, and when they left they had every window downstairs installed. The third day they again arrived on-time, and got to work installing the door. The door and windows are perfectly installed. The two lads that did the installation did a phenomenal job, and were friendly to boot. I would give them more business if I had any :) The service I received from the company was great. They kept me abreast of anything that was going on with my order. I appreciate my concierge, Christina, she was good at communicating timelines and getting everything scheduled."
Jun 28, 2022
"The two installers were great! They were polite and hard working and they cleaned up all the outside and inside. It was like they were never here. As for the windows, I love them, not only looks great, they are efficient. Now every window in my home has Renewal by Anderson."
Jun 23, 2022
"We had the pleasure recently of having Andersen replace all of our windows. From the very first interaction with the office personnel through the completion of the project, they have been nothing but professional. From Brian our sales rep to Christina the appointment scheduler, they were a pleasure to interact with. Installers Keith, John, and Evan were fantastic to work with. They went above and beyond to repair an area which was slightly damaged during the removal of a window...caulked and painted it. They took extra precaution to ensure the floors were covered while working inside and cleaned up each day inside and out. We love the look of our new windows and can't wait to enjoy the savings in utilities they'll provide. Thanks so much Renewal by Andersen!!"