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What Makes Windows Energy-Efficient

Modern windows replacement products feature two or more sheets of specially-coated glazing. Sandwiched between these glass panes is a microscopic layer of inert gas that greatly improves performance and energy efficiency ratings of the window.

Today, Renewal by Andersen® of Oklahoma discusses what makes a window energy-efficient.

Glass Coating

From double-hung to picture windows, all our windows from Renewal by Andersen® of Oklahoma come standard with a High-Performance™ Low-E4® coating, which has been proven to be 56% more energy-efficient in summer and 47% in winter than ordinary dual-pane options (based on 2018 International Energy Conservation Code “Glazed Fenestration” Default Tables). We also offer a wide range of advanced glazing choices for homes with higher energy requirements. Ask your design consultant about our glass products to learn more about them.

Gas Inserts

Many window manufacturers use argon or krypton as a gas insert in between the panes of their replacement windows. This extra layer of gas provides excellent insulation against heat as well as added defense for the sun’s harmful ultraviolet rays. Our products feature an exclusive gas compound that has gone through independent laboratory testing to fully maximize the U-factor of our windows.

Frame Material

Our Fibrex® framing material is specifically engineered to further improve the energy efficiency of our windows. This thermopolymer composite is stronger, longer-lasting and more damage-resistant than typical vinyl or wooden frames. The frame itself is designed to create an airtight seal around the windowpane, making for a more energy-efficient home.

Find superior-quality glass, glazing and frames at Renewal by Andersen of Oklahoma, the trusted name in replacement windows. Give us a call at (405) 212-5936 or fill out our contact form to schedule a consultation and request a free estimate today. We serve Oklahoma City and nearby areas.


"Our new windows are absolutely wonderful! We were pleased with the entire process and the product and would recommend Renewal by Andersen to anyone."

Mike & Kathy, Edmond| OK
November 5

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