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Top 5 Energy-Efficient Windows

High Performance R-5 Windows

Ply Gem® has raised the standard of efficiency with its high performance R-5 windows, which make them the perfect option for new home construction. These highly insulating windows make them one of the most energy-efficient windows on the market and they are ideal for cold and mixed climates. Having an R-value of 5 means that these windows have reduced heat loss from a U-factor of 0.3 to 0.2. Simply put, consumers will save more than 30% on energy bills.
Model: Learn more about Ply Gem® R-5 Windows
Outperforming Vinyl and Aluminum

Integrity Windows® Ultrex® Fiberglass Sliders are the perfect alternative to casement windows when space is limited to allow for a swinging sash, like over a kitchen sink. And then of course there is efficiency and durability to consider which is why Ultrex® was designed using the latest in fiberglass technology to create highly durable, stable and virtually indestructible windows. It's offered in LoE2 tempered glass for extra durability, shatter resistance and a special efficiency glazing.
Model: Integrity Windows® Ultrex® Fiberglass Slider
Energy Performance Packages

Purchasing Andersen® Windows with the EcoExcel™ energy performance package will assure you that your windows will meet the tax credit performance criteria. You can choose from a wide variety of styles and custom or standard shapes from the 400 Series and 100 Series product lines without paying for expensive upgrades. These windows are 70% more energy-efficient in the summer and 45% more energy-efficient in the winter compared to standard dual pane glass.
Model: Andersen® EcoExcel™ 400 Series Casement Window | Base price $391
3D Energy Packages

Milgard® Windows makes it easy to take ENERGY STAR® qualifications to a whole new level of efficiency with two additional energy packages — 3D® and 3D MAX® Energy Packages. These two energy packages address all three key areas of efficiency — framework, product design and glazing by matching them to the climate of the region you are installing these new windows.
Model: Shown is the new Milgard® Essence™ Series wood windows
High Performance Insulated Windows

JELD-WEN® Windows offers a high-performance LoE3-366 glass with insulating argon gas to lower energy costs by assisting in keeping homes cooler in the summer and warmer in the winter. This technology also deflects direct sunlight to help reduce the fading of interior furnishings and prevent condensation. JELD-WEN® also makes it easy for you to customize your energy-efficient windows by using their online "Design Your Own" Product Visualization Tool.
Model: JELD-WEN® Custom Wood Double-Hung Windows
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