What You Need to Know About Energy Efficient Windows
There are many factors that make energy efficient windows. And let’s face it, windows are not a small purchase. We want you to be prepared when you buy new windows, so we’ve done the hard work for you. This way you’ll be better educated on your new window purchase. Here’s what you need to know before you start shopping for energy efficient windows.
Three factors to consider when shopping for energy efficient windows.
1. The glass is the most important part of an energy efficient window.
Glass packages have the greatest effect on your window’s energy efficiency. You may pay a little more for a great glass package up front, but you’ll save more in the long run. Here are a couple glass package options to keep in mind.
What is Low E?
Low-E reflects infrared light keeping heat inside in the winter and outside in the summer. It can also help keep your carpets and furniture from fading.
What is a Gas Fill?
Either Argon or Krypton can be placed in between glass panes to provide greater insulation than regular air.
2. Window frame material plays a key role.
Not all window materials are created equal. Windows come in a number of different materials, including vinyl, wood, aluminum, fiberglass and composite.
3. Consider ENERGY STAR certified windows for the ultimate energy efficiency.
ENERGY STAR is a government supported program that uses specific criteria to define an energy efficient window.
How does ENERGY STAR determine what makes energy efficient windows? By measuring four different parts of the window: the glass, the gas, the spacer and the reinforcement. The combination of these factors influences the window’s U-value and solar heat gain, both of which are drivers for meeting the ENERGY STAR performance level.
To be labeled as an ENERGY STAR product, the U-factor and SHGC (Solar Heat Gain Coefficient) ratings must be less than or equal to those established by ENERGY STAR.
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