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What Makes Replacement Windows ENERGY STAR® Qualified?

You know you’re purchasing energy-efficient windows if they are ENERGY STAR® qualified. These windows add more protection to your home and help you save on energy costs.

What Makes Replacement Windows Energy Star Qualified

In this post, your trusted local windows contractor, Renewal By Andersen® of St. Louis, discusses what makes windows ENERGY STAR qualified.

Characteristics of an Energy-Efficient Window

Energy-efficient windows have multiple panes with an air- or gas-filled space in the middle. Odorless, colorless and non-toxic gasses like argon and krypton work better than just air in preventing the transfer of energy.

The more panes the windows have, the more energy-efficient and impact resistant they can be if they’re well-made. Spacers keep the glass panes at a safe distance from each other. Non-metallic and metal spacers insulate pane edges, helping reduce heat transfer.

Low-e glass has a special coating that reflects infrared light, retains indoor heat in the winter and keeps hot air outside in the summer. This glass also protects you from harmful ultraviolet (UV) light and helps prevent furniture from fading.

Renewal by Andersen of St. Louis offers ENERGY STAR-rated windows to help reduce your energy costs and improve your home’s appeal. We offer energy-efficient and beautiful bow, picture, double-hung and casement windows.

ENERGY STAR® Framing Materials 

An energy-efficient window has top-quality frame material. Such materials should be low-maintenance and highly insulating.

Fiberglass is a durable and low-maintenance material. Fiberglass frames can be hollow or filled with foam insulation. Vinyl frames excel in thermal insulation, and they may also be hollow or filled with foam insulation.

Aluminum frames are a eco-friendlier option as they are recyclable and usually made of up to 15% recycled materials. Wood frames should be clad with aluminum or vinyl to reduce maintenance. Meanwhile, composite frames are created from different materials mixed together to make low-maintenance and durable windows. Probably the best type is Fibrex®, our proprietary framing material developed by our parent company, Andersen®.

Choose Renewal by Andersen of St. Louis for high-quality windows installation services. Our team also specializes in French and sliding patio doors. Call us at (314) 332-2364, or complete our online form for a free in-home estimate. We help homeowners in St. Charles, MO, and surrounding areas.

Reviews

"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."

Lane Maxwell
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."

Mark Palsgrove
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!!"

Kevin Corrigan
Jun 15, 2022

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