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Metrics to Consider When Assessing Window Performance

Upgrading your windows is one of the best ways to improve your home’s energy efficiency. To get the most out of your investment, however, you first have to assess their performance. For this, you need to learn about certain metrics that are in place to help you compare products and make informed purchases. Renewal by Andersen® of Memphis, one of the top local window installation companies, discusses four energy performance ratings to consider.

 Assessing Window Performance

U-Factor

The U-factor measures the amount of heat inside your home that can escape through a window. The lower its value, the more the window is capable of resisting heat flow and providing greater insulation for your home. It shouldn’t be confused with the R-value, which measures the effectiveness of insulation in your home’s energy envelope, including the walls, flooring and anything that acts as a barrier separating the indoors and outdoors.

Solar Heat Gain Coefficient

The SHGC is a rating that measures the amount of solar radiation admitted through a window—either transmitted directly or absorbed and subsequently released as heat indoors. Energy-efficient windows with low SHGC ratings work better in homes situated in hot climates because of how they prevent rooms from overheating, especially in the afternoon.

Air Leakage

This rating measures the volume of air that can penetrate a home through a window. It might be an optional rating unlike the U-factor and SHGC, but it is nonetheless an important metric because it indicates how airtight a window is.

Visible Transmittance

This rating measures the ability of the window glazing to transmit sunlight into a home. Windows with a high VT rating may reduce your dependence on artificial lighting. Reflective coatings are also applied on the glass surfaces to keep out unwanted heat while still allowing natural light to enter your home.

At Renewal by Andersen of Memphis, we can help you find high-quality replacement windows for your home. Learn more about our ENERGY STAR® windows by calling (901) 979-4460. You can also fill out our contact form to schedule a free consultation.

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Reviews

"Absolutely wonderful experience working with renewal. They kept my wife and I up to date all throughout the process from the initial sales pitch to installation. They were courteous and professional throughout. The installation of 8 windows was completed in one day and the product is fantastic. Immediate difference felt inside the home and its much quieter now too. My wife and I are thrilled at our purchase. The windows are a bit pricey but worth every single penny. Wonderful product from a wonderful company. Will definitely be using them in the future to install the rest of the windows in our home."

Joseph Sipes
Jul 16, 2022

"When I say, superior service I mean just that!! From start to finish I was pleased!! Step 1, Scheduled appointment at the Home show… easy. Step 2, phone call to confirm appointment the next week….easy. Step 3, in home consultation with Keith Billingsley…..Amazing!!!! Step 4, call and cancel all other Window companies and let them know you have chosen the Best company, Anderson Windows!!! My Windows took a couple of months to come which was not a problem. Oooohhh but when installing day came ( a week early) I was lost for words. The installation team was A1 with professionalism and cleanliness!! They didn’t leave a scrap of trash on my property. It was cleaned up both days. I had Ed Tutton and crew. I had a million questions and they answered every one of them and made me feel so assured with the process. A couple of my Windows had wood rotted. They took care of it and fixed it better than when the house was built!!! Two of my Windows came in broken, it was addressed and shown to us and reorder in the same day!! They will be installed later. The Windows are so beautiful I stood in my master bedroom Windows for almost 3 hours just looking out. I hate Window grates…. I have solid glass Windows now❤️❤️! I wish I would have ordered my new front doors from Anderson Windows. So if you are looking to get new Windows you must go with Anderson Windows!!!"

Celeste Ousley
Jul 13, 2022

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