Differentiating Between the NFRC® and ENERGY STAR® Window Labels

Differentiating Between the NFRC® and ENERGY STAR® Window Labels

January 17, 2020

When you shop for replacement windows for your window installation project, expect them to have two labels: one from the National Fenestration Rating Council® (NFRC) and the other U.S. Environmental Protection Agency’s (EPA) ENERGY STAR® program. But what’s the difference between these two labels?

How Important Are the Two Labels?

Energy efficiency is the ability of your home to ensure the interior temperatures remain stable so you can reduce indoor heating and cooling requirements, and consequently lower energy consumption. This is made possible through our replacement windows’ various features. These include our Fibrex® frame material and High-Performance™ Low-E4® glass. Their combined function allows for the prevention of heat loss during cold days and solar heat gain during hot days.

Remember that no two homes are exactly alike, which is why choosing a replacement casement window is subject to different specifications.

What’s the Difference?

The blue-colored ENERGY STAR label indicates whether or not a window unit has met strict energy efficiency criteria set by the U.S. government for a specific region. It is represented as a color-coded map, and the states that are shaded mean the unit is ENERGY STAR-qualified for those areas.

Below it is the NFRC label, which allows you to compare several energy-efficient products by providing individual energy performance ratings in multiple categories. These include the U-factor, the solar heat gain coefficient (SHGC), air leakage (AL), visible transmittance (VL) and condensation resistance. Each of these comes in numbers to give you a more accurate reading.

Renewal by Andersen® of Milwaukee can help you choose the best windows to help you increase energy efficiency. Expect us to also discuss the ratings on the labels during our consultation.

Call us at (262) 522-3034, or fill out our contact form to request a free in-home consultation. We serve residents of Milwaukee, WI, and the surrounding areas.

Hear From Our Customers

This was a great crew to work with. Both the original install manager we worked with (Jay) and the install team (Daniel, Mason, Tony, Ethan, and Jose). Everyone was very professional and knowledgable. They answered all my questions and the end result on the house is great. In 3 days they replaced an old bay window with a new bay window, a set of french doors on the patio with a sliding patio door, and our old front door with a new front door and storm door.

Jason and Brett did an awesome job installing our doors. We had separate installers a month earlier for our windows who also did a fantastic job. They were all very professional and cleaned up almost better than the area looked before the installation! Since these were both jobs that took more than one day the installers were great at keeping us informed on the status of where the project was at along the way.

I cant express how happy we are with choosing Andersen for our window installation. Our sales representative was knowledgeable with product and answered any questions we had without hesitation. I did also fill out a survey that was sent in an email, but sadly I failed to personally name the two gentlemen that performed the actual installation. Barrett and Francisco were our guys, and let me tell you, they were outstanding!!! They did Excellent work and were professional as well as efficient and made this a smooth, none evasive process for us. I strongly recommend this company and these installers to anyone in need of windows!!! My husband and I could not be more pleased we chose Andersen for replacing our windows!!!

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Since its founding in 1977, the Alliance to Save Energy has been a leader in energy efficiency policy and advocacy. Over the years, the Alliance’s programs and priorities have evolved as U.S. energy efficiency policy has grown.