What Are Energy Efficient Windows

Source: Pella | Repost Fadely 1/25/2023 – 

Choosing energy efficient windows for your home comes with a plethora of benefits. Energy efficient windows help make your home more consistently comfortable, save on utility costs, and perform better. So, how do you choose energy efficient windows for your home, and what makes a window energy efficient, really?

What Makes a Window Energy Efficient?

Believe it or not, there are a few variables that impact a window’s energy efficiency. The construction of the window itself, number of glass panes, and insulating gas between the panes all have an effect. As you explore possible window choices for your home, one of the quickest ways to get critical energy efficiency information is to read the label.

How to Read a Window’s Energy Efficiency Label

With the emphasis on increased energy efficiency throughout the home, there are multiple rating systems that you may see. The gold standard of window efficiency comes from an ENERGY STAR® rating system and the National Fenestration Rating Council’s (NFRC) rating system. Pella offers windows with both ratings. While an ENERGY STAR® certified product is easy to recognize thanks to the famed blue logo, NFRC window labels will state the U-factor, visible transmittance, solar heat gain coefficient, and air leakage ratings, giving a more granular view of efficiency-impacting factors.

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