A Guide To Understanding Energy Efficient Window Labels

energy efficient window

A Guide To Understanding Energy Efficient Window Labels

A common goal for modern homeowners is making sure that their house is as energy efficient as possible, and one of the common ways of achieving this goal is installing energy efficient windows. However, because energy efficient windows can come with several labels, it can be hard to know if you’re selecting the right option for your home.

If you’re interested in boosting your home’s efficiency, it’s a good idea to learn more about these labels and what each one means so that you can be sure you’re investing in the correct window. Here is a quick guide to understanding energy efficient window labels that will make it easier for you to purchase and install the right windows in your home.


One of the easiest ways to check the energy efficiency ratings of a window is checking out the manufacturer’s label. With this label, you can learn several important pieces of information about the window, many of which are related to its efficiency.

For instance, this label can tell you the material that was used to construct the frame, as well as the number of panes used. It will also late you know the gas that was used to fill the space in between multi-pane windows. Finally, this label may show you if Low-E gas treatment, which reduces the effect of UV light was used on your window.


On your manufacturer’s label, you will usually see a number that is either four or five digits long. This number should be in bold and is used by the National Fenestration Rating Council (NFRC). An independent organization, the NFRC rates windows for their energy efficiency, and the number on the label can be used to choose the most efficient window model possible.

The NFRC considers several factors when certifying a window model. Some of the information you can learn from the number on your label includes how much air leaks around the window, how effective the window is at keeping heat in your home, and how much light can get through the window.


When discussing energy efficient window labels, we would be remiss not to discuss the Energy Star label. These labels are issued by the government, and for a window to earn this label, it must meet a variety of requirements that are specific to your climate.

If you want to make sure that your windows are boosting the energy efficiency of your home as fully as possible, you need to invest in a model with the Energy Star label.


One of the best ways to make your home more energy efficient is installing energy-efficient windows. However, to save as much money on your energy bills as possible, you also need to make sure that your air conditioning is optimized, which is a great reason to work with Legacy Air.

At Legacy Air, we offer a variety of services, including air duct cleaning and air conditioning repair, both of which can make your home more efficient. Get in touch with us today to find out how we can help you.

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