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Energy Efficiency Windows

Energy Efficiency & Savings

Renewal by Andersen has long demonstrated a deep commitment to energy efficiency. This dedication began with the switch from wood windows to vinyl frames, and continued with the introduction of the revolutionary Fibrex® frame material. As energy costs continue to be of concern for our customers, our company remains dedicated to energy innovation with the development of some of the highest-rated energy-saving products on the market.

The Latest Advances in Window Technology

Renewal windows feature Fibrex frames that create a weather-tight seal that will stay weather-tight even in the hottest summers and the coldest Iowa winters. One of Fibrex’s most important characteristics is that it will not conduct heat as well as wood, metal or vinyl, making it easier to keep your home comfortable without overworking your heating and cooling system.

The double-pane, Low-E glass included in Renewal windows also offers many energy-saving features. As the sun’s rays bear down on your home in the summer, this advanced glass will filter out long wavelengths of heat while allowing the short wavelengths of visible light to pass through, leaving you to enjoy a cooler environment without decreasing natural light. Renewal’s Low-E glass is also a wonderful way to limit the amount of UV and infrared rays that enter your home and cause fading of carpet and furnishings.

Sustainable Manufacturing Practices

Both Fibrex and Low-E glass are relatively new advances in window technology, and Renewal by Andersen continues to set the bar for energy standards higher each year. This includes within the manufacturing process, where “green” production is used to manufacture Fibrex. Wood by-products from the manufacture of Andersen windows are reclaimed for use in Fibrex, an innovation that has prevented the harvest of an estimated 90 million board feet of timber. And 99% of Renewal’s manufacturing by-products become fuel or are reused, reclaimed or recycled.


"We had two triple large sliders replaced in our home the second week of December. Ben, Nate and Eli did a great job! Quick, Professional and the doors look great! Much warmer in the rooms with the new Andersen Renewal doors! Will use them again if need windows in the future!"

Donna T. - West Des Moines, IA
December 2013

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