How to Get the Most Efficient Replacement Windows

by | May 28, 2015 | Blog

Shopping for new replacement windows in Fort Worth can seem like a pretty daunting task. After all, how much do you really know about U-values, R-values, and SHGC? If you’re already feeling nervous just thinking about this industry jargon, here are some tips to help you find the most energy efficient windows.

Understanding the Standards

Standards for measuring the energy efficiency of windows were established by the National Fenestration Rating Council (NFRC). The organization works as an independent non-profit to oversee the rating system and measure the performance of a wide variety of replacement windows, doors, and skylights. Having a single measurement system helps builders, officials, and buyers compare and contrast different options in an “apples to apples” system for the most informed choices.

What the Ratings Mean

There are three key ratings to shop for when you’re getting replacement windows in Fort Worth. Your window contractor should be able to help explain the difference between these three things and the importance of each in more detail, but here is a basic overview:

  • U-value: This measures the rate that heat flows through a window. Lower U-values mean more energy efficiency, and it is the single measurement that is used in determining whether a window will be labeled with the U.S. Department of Energy’s ENERGY STAR approval.
  • R-value: This measures how resistant your window glass is to heat flow. A higher R-value means that the glass will provide better insulation for your home, but it’s not a measurement commonly used by the NFRC or ENERGY STAR program since it only measures heat flow through the glass, and doesn’t take the rest of the window into account.
  • Solar heat gain coefficient (SHGC): This measures how well your replacement windows in Fort Worth can block heat from direct sunlight. In a place like Texas, where there are a lot of sunny days, this can be essential for getting windows that will help keep your home cool and comfortable. It’s measured from 0 to 1, with numbers closer to zero indicating lower heat transmission.

If you’re ready to get more energy efficiency from your windows, call a replacement window contractor in Fort Worth to find out more today.

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