Replacement Windows Energy Ratings

Replacement Windows & the NFRC Label

Enjoy Energy Efficiency & Beauty with New Windows

It goes without saying that the replacement windows we carry at Precision Home Products will dramatically improve the curb appeal of your home. However, many homeowners don’t know of the fantastic energy-saving benefits that our windows provide. For instance, each of our replacement windows are Energy Star® certified, which is why they have the Blue Energy Star® sticker. This sticker represents a product’s superior energy efficiency. In order to earn this coveted label, the product must meet and surpass government standards for energy efficiency.

Another way to determine the energy efficiency of a window is to examine the NFRC label. This particular label shows the window’s ratings for energy efficiency. The rating system is set by the National Fenestration Rating Council and based on how well a window performs. The qualities measured are U-Factor, Visible Transmittance, Daylighting, Air Leakage, and Solar Heat Gain Coefficient, all of which factor into a window’s energy efficiency. We believe that in order to make an educated decision with your replacement windows, you should be able to understand the NFRC label.

Defining the NFRC Label:

  • U-Factor: The U-Factor is the measurement of how well a window retains heat, which directly relates to its ability to fight off heat transfer. A scale of .20 to 1.20 is used to represent the rating with a lower number being ideal.
  • Visible Transmittance (VT): The visible transmittance of a window is a measure of its potential for daylighting, which its ability to illuminate an interior with natural light. Greater potential for this is indicated by higher numbers on a scale of 0 to 1.
  • Air Leakage: The potential for resistance to air leakage through a window’s hardware and frame is measured on a scale of .1 and .3. Lower numbers on the air leakage scale indicate that there’s less chance for air to leak through the main window components.
  • Solar Heat Gain Coefficient (SHGC): This measures the window’s ability to block radiant heat and UV rays. Windows that are equipped with Low-E coatings will typically have a lower number for the SHGC rating, which is measured on a scale of 0 to 1.

Use Window Ratings to Your Advantage

The NFRC ratings ensure that you’ll never fall prey to purchasing inefficient windows ever again.  The key is understanding what each number represents, which gives you insight into how well a window will perform on your home. Fortunately, every window we carry is rated by the NFRC and carries the Blue Energy Star® label. Furthermore, we produce all of our windows in-house so we know just how energy efficient they can truly be. Create a more energy efficient home today by contacting us and scheduling a free consultation. Don’t forget to ask about our triple-pane windows so you can get the most energy efficiency out of your replacement windows!

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