What Is A Good U-Factor For A Window?

Good U-Factor Replacement Window Nashville TN

The U-factor, also sometimes called the U-value, measures the rate of heat transfer through a material or building surface such as a wall, window, or door. It is commonly used to rate the energy efficiency of windows and doors, and while the science required for calculating U-factors can be rather complex, all you really need to know is that, for windows, a lower U-value is more desirable because it means that less heat is able to pass through the window. What passes as a “good” U-factor is largely contingent on the climate in which you live, as the Energy Star 6.0® standards vary slightly from region to region. In a colder, northern climate, energy-efficient windows boast U-factors as low as 0.27 and 0.28, whereas central climate zones call for a U-factor of no more than 0.30. In warmer southern climates, where the majority of the home energy use is for cooling rather than heating the home, an energy-efficient U-factor could be as high as 0.40.

Trust American Home Design for All Your Home Improvement Needs

When it comes to keeping your home in tip-top shape, American Home Design is the company to trust. From replacement windows and doors to outdoor living structures and water treatment systems, we specialize in a wide range of home improvement services and would be happy to assist you with all your needs. For top-notch products, expert installation, and friendly customer care, Nashville, Tennessee, homeowners have turned to us for more than 40 years.

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If you would like to learn more about the energy-saving benefits of our replacement windows, or what an ideal U-factor for your climate would be, contact American Home Design today. We proudly serve homeowners throughout Nashville and surrounding areas.

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Hear what American Home Design customers are saying!

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“The entire team especially our installers were amazing. They were so friendly, thorough and knowledgeable. They double checked everything and made sure everything was perfect before they left, and no mess left behind. I’m very happy with my new shower!”
Shelia P.
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"If I could give more then 5 stars I would! They were professional, accommodating, and extremely knowledgeable. We had a few hitches in our giddyup and they were patient and understanding which was so appreciated! 10000% recommend over and over!"
Chelsea C.
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"American Home Design has been so wonderful! Even after having our system for 6 months now, they still follow up with us to make sure we are still happy with our system to make sure everything is still working properly. I’ve never had anyone from any company stay in contact like that to make sure we are satisfied."
Lindsay L.
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"The team was fantastic! Personable and professional at the same time, cleaned up any mess left over from the work done, and was super accommodating. We will definitely be calling them for any future home improvement needs."
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Visit Our State-of-the-Art Showroom!

In our Goodlettsville showroom, you can see:

  • Bathtubs & Showers
  • Walk-in Bathtubs
  • Replacement Windows
  • Patio Cover
  • Pergolas
  • Entry & Patio Doors

Showroom Hours:

Monday-Friday: 8am-5pm
Saturday: 10am-5pm
Sunday: Closed
American Home Design Showroom

We are located at 880 Conference Drive in Goodlettsville – 1 mile north of Rivergate Mall.