What are energy efficient windows?

Energy efficiency is overwhelmingly important to homeowners, which was made clear in a 2019 study conducted by the National Association of Home Builders. 

For homeowners, installing energy efficient windows is one of the easiest ways to reduce energy consumption.  Consequently, lower energy consumption means lower monthly heating and cooling bills. 

What are energy efficient windows?

Energy efficient windows work with the seasons. In the winter, they keep heat inside the home, while in the summer, they keep the cool air in. The climate zone where you live determines the type of window that is qualified for your location. 

The easiest way to determine if a window is energy efficient is to select ENERGY STAR rated products. ENERGY STAR rated windows are manufactured by an ENERGY STAR partner, tested and certified by the National Fenestration Rating Council, and meet strict energy efficiency guidelines set by the US Environmental Protection Agency.

Features of an Energy Efficient Window

For windows to be considered energy efficient, they must meet specific criteria. These include:

 

  • Low-E Glass. A special coating on the windows helps to reflect infrared light and ultraviolet light. This not only increases the insulation, but helps to protect carpet and furniture against fading from the sun.
  • Panes of Glass. Energy efficient windows contain at least two panes of glass, but can have three or more panes for more insulation. 
  • Warm Edge Spacers. Edge spacers keep the panes of glass secure at an equal distance apart. Warm edge spacers are non-metallic, helping to reduce the loss of heat around the edges of the window.
  • Gas Fill. In between the panes of glass, non-toxic, odorless, and colorless gases can be added. These gases help increase insulation. 

 

 

Framing Options

In addition to creating the aesthetic style of the window, window frames are as important as glass when it comes to energy efficiency. There are numerous options for ENERGY STAR rated window frames. All of these framing options are designed to provide optimal insulation:

 

  • Wood 
  • Fiberglass
  • Vinyl
  • Aluminum 
  • Combination: Made of different materials, used separately throughout the frame (such as a wood interior and fiberglass exterior). 
  • Composite: Manufactured with blended materials. 

 

 

We know how important it is to both reduce energy usage and keep the home comfortable. Selecting windows that are energy efficient is an easy way to accomplish both.

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