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UNDERSTANDING YOUR DOORS AND WINDOWS: THE NFRC LABEL

There are many ways to differentiate the door and window choices that you might want for your home remodeling project. You can classify them based on their looks, the material they’re made of and even their intended purpose. There are other subtler ways of comparing doors and windows, but what sets them apart from each other may not always be seen right away. For that kind of comparison, people often look for important labels, such as the National Fenestration Rating Council (NFRC) Label.

Understanding Doors Windows Nfrc Label

What is the NFRC Label?

This label from the NFRC is designed to help buyers figure out how energy efficient doors and windows can be. It displays critical factors that affect a door or window’s overall contribution to your home’s energy efficiency, each rated according to the NFRC’s scoring system. Here are the following window properties rated by the NFRC:

  • For Doors – product description, glass area and door-specific ratings (solar heat gain coefficient and U-factor)

  • For Windows – U-factor, solar heat gain coefficient, visible transmittance and air leakage

You want doors and windows with very low ratings on most of these factors while you want high ratings on visual transmittance. Andersen® doors and windows boast excellent ratings in both of those fields

What About the ENERGY STAR® Label?

You’d still want to look for the ENERGY STAR® label on a door or window to make sure that whatever you’re buying will meet the minimum energy-efficiency standards. However, if you really want to get the most value out of your doors and windows, you must be able to tell which ENERGY STAR-labeled option will help you save more in the long run by reading each option’s NFRC label.

Making sure your doors and windows are as energy efficient as possible is one of the best ways to get the most value out of them. If you’re looking for options that have high NFRC ratings, Renewal by Andersen® of St. Louis can help you. We are the leading providers of energy-efficient doors and windows in St. Louis, MO, and nearby areas. Call us today at (314) 310-3636, or fill out our online form to request a free estimate.

Reviews

"Have nothing but great things to say about the window installation done today by John Hutchinson with Renewal by Andersen! He was friendly, personable and professional and did a great job installing. He did a great job of putting down roller pads and tarps with next to zero clean up. Would highly recommend them for any window replacement needed!"

Mark V.
Jun 26, 2025

"We had our new Renewal by Andersen windows installed on June 5th & 6th, 2025 and we LOVE them! The quality, beauty, and functionality are best-in-class! The whole experience from dinner presentation at Lazy River Grill, the initial in-home sales consultation and measurement, the regular communications from the salesman and concierge, and the installation team’s professionalism and skills made the process so seamless. This is the second home we have opted for Renewal windows and doors and have been delighted both times! Thank you Renewal by Andersen STL! "

Jeff C.
Jun 7, 2025

"I had an excellent experience with RbA STL. Our designer, Courtney, was great and the finished product is awesome. The installation was easy and the gentlemen left our home cleaner than they found it upon entering. I would recommend RbA STL - you’ll get tired from their constant contacts, and that’s a GOOD thing!"

Jeramy D
Jun 3, 2025

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