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Energy Efficiency

Energy Savings Through Window Replacement

Renewal by Andersen of Seattle installs energy efficient windows that help to reduce home energy consumption and lower monthly heating and cooling bills. Each window produced by Renewal by Andersen utilizes energy efficient materials that are designed to limit the amount of energy needed to maintain a comfortable and cozy environment in your home. Here’s what makes our windows among the most energy efficient you can buy.


Renewal by Andersen’s exclusive Fibrex® frame material offers the beautiful look of wood with the insulation and low maintenance of vinyl. Fibrex also blocks thermal transfer nearly 700 times better than aluminum to help reduce heating and cooling bills. Plus, Fibrex will not crack, pit, corrode, or rot like wood or vinyl, which helps to eliminate energy leaks.***

Efficiency Windows

Renewal by Andersen windows utilize one of two distinct energy saving glass packages:

  • High Performance™ Low-E4® glass is 45% more energy efficient in summer and 56% more energy efficient in winter as compared to ordinary dual panel glass.***
  • High Performance™ Low-E4® SmartSun™ glass is 70% more energy efficient in summer and 45% more energy efficient in winter as compared to ordinary dual panel glass.***

Custom Sizing on Every Window

Even the most advanced window materials will not work at peak energy efficiency if not properly installed. That is why Renewal by Andersen of Seattle custom fits each window for the home in which it is to be installed. This ensures a durable, weather-tight seal that prevents energy leaks.

The Most Energy Efficient Window Replacement

Renewal by Andersen of Seattle installs only the highest quality products, protected by the best warranty you’ll find.** We’re here to help you make your home more comfortable and energy efficient.

We make it easy and affordable to improve the value of your home with Renewal by Andersen replacement windows – the windows homeowners prefer for beauty and superior performance. Call (206) 686-7733 today to schedule your free in-home consultation in Seattle and the nearby areas. Or fill out our convenient online request form and we’ll contact you.

**See the Renewal by Andersen® 20/2/10 limited warranty for details.

***Values are based on comparison of Renewal by Andersen® double-hung inserted window SHGC to the SHGC for clear dual pane glass non-metal frame default values from the 2006 and 2009 International Energy Conservation Code.


"We were very pleased with the process. Our windows are beautiful, and we are very happy we made the decision to choose Renewal by Andersen."

Tom | Seattle, WA
November 10

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