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THE UNIQUE FEATURES & BENEFITS OF OUR GLASS PACKAGES

The energy efficiency of a window is largely dependent on the quality and br and of the window. To maximize your investment, choose a window replacement that focuses on maximum energy efficiency. Your trusted Chesterfield Missouri windows company, Renewal by Andersen® of St. Louis, discusses our unique glass packages.

The Unique Features Benefits Of Our Glass Packages

High-Performance™ Low-E4® Glass

This glass package is our st andard offering. It makes our windows 56% more energy-efficient in summer and 45% more efficient during winter. Compared with ordinary dual-pane glass, this package helps cut down energy bills by up to 25%. Our st andard glass package blocks 83% of the sun’s harmful UV rays.

High-Performance™ Low-E4® SmartSun™ Glass

SmartSun glass is the most energy-efficient option among the three. It makes our windows 70% more energy-efficient in summer and 47% during winter. It has the highest energy efficiency rating during cold weather. SmartSun also does exceptionally well in summer, blocking the intense heat of the sun while letting in enough natural light. It also filters harsh light that can fade your carpet, artwork, drapes and furniture.

High-Performance™ Low-E4® Sun™ Glass

Sun glass has the highest rating against solar heat gain. It helps homes stay cooler during warm weather. The specialized coating on our Sun glass reduces the amount of visible light. This means that homeowners can enjoy just the right amount of natural lighting indoors. Like our other glass packages, Sun glass does well at filtering harsh light.

As the go-to Chesterfield doors and windows company, Renewal by Andersen of St. Louis ensures quality and performance in our products. We offer industry-leading glass packages that will significantly contribute to your energy savings. If you have any questions or if you want to learn more about our replacement windows, call us at (314) 310-3636. You can also fill out our contact form for a FREE in-home estimate.

Reviews

"Have nothing but great things to say about the window installation done today by John Hutchinson with Renewal by Andersen! He was friendly, personable and professional and did a great job installing. He did a great job of putting down roller pads and tarps with next to zero clean up. Would highly recommend them for any window replacement needed!"

Mark V.
Jun 26, 2025

"We had our new Renewal by Andersen windows installed on June 5th & 6th, 2025 and we LOVE them! The quality, beauty, and functionality are best-in-class! The whole experience from dinner presentation at Lazy River Grill, the initial in-home sales consultation and measurement, the regular communications from the salesman and concierge, and the installation team’s professionalism and skills made the process so seamless. This is the second home we have opted for Renewal windows and doors and have been delighted both times! Thank you Renewal by Andersen STL! "

Jeff C.
Jun 7, 2025

"I had an excellent experience with RbA STL. Our designer, Courtney, was great and the finished product is awesome. The installation was easy and the gentlemen left our home cleaner than they found it upon entering. I would recommend RbA STL - you’ll get tired from their constant contacts, and that’s a GOOD thing!"

Jeramy D
Jun 3, 2025

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