Energy Star Window Ratings Explained

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If you have shopped for windows, doors, and other components of the home, it is quite likely that you have observed Energy Star labels on the products. These come from a program that is run by the Environmental Protection Agency (EPA) and the country’s Department of Energy.

In short, these two agencies specialize in assessing the energy efficiency of various products. If you are considering purchasing new windows for your home, continue reading to learn more.

Criteria for Energy Star Windows

In order for a window to be deemed an Energy Star window, it must meet certain criteria. These include the following:

  • The window must be manufactured by the partner of the Energy Start program
  • The National Fenestration Rating Council or “NFRC” must have completely tested, ensured a certification, and verified the window
  • All of the guidelines as set forth by the Environmental Protection Agency must be met

What Do the Window Ratings Mean on a Label?

The following is included on a label associated with Window Ratings. We have outlined each mention and have provided a brief explanation of each below:

  1. The U-Factor – This is the number that represents the unique rate of the transfer of heat and the insulative properties of the window. A low number indicates a better level of insulation.
  2. The Solar Heat Gain Coefficient – This number indicates how well the window blocks the heat that comes from the sunlight. If it has a low number, it means it is better at blocking the solar heat. This is sometimes identified as “SHGC”.
  3. The Air Leakage or “AL” – This is the measurement of exactly how much air moves through the window. The lower the number, the lower the leakage.
  4. The Visible Transmittance (VT) – This represents the measurement of how much light the window allows in. It is a scale from 1-10. If the number is high, it means a larger amount of natural-based light makes its way indoors.
  5. The Condensation Resistance or the “CR” – This measures how well the window does at resisting the buildup of moisture. The scale goes from 1-100. The higher the number, the better the moisture resistance. If at all possible, you should avoid purchasing windows that have a condensation resistance of 50 or lower. These have a large buildup of moisture.

Why Should I Buy Energy Star Windows for My Home?

Based on information pulled from the Department of Energy within the United States, Energy Star windows are capable of saving a tremendous amount of money on your utilities because these components of the home account for up to 30% of the climate control within the home. Over time, the windows will help you save a lot of money on heating, cooling, and lighting.

Contact Us Today

We here at Southern Industries Home Improvements specialize in a wide assortment of windows for the home. We carry Energy Star windows that will instantly boost the value of your home and immediately decrease the amount that you pay on your energy costs.

To learn more, contact us today. Remember to ask about our low-cost installation special: (833) 240-4900

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