Knowing how to measure the performance of windows gives you a huge advantage when investing in a window replacement project. By being able to evaluate factors like a window’s energy efficiency and ability to meet the demands of your local climate, you can make sounder purchasing decisions and enjoy better long-term performance from your new windows.
Here are the factors you need to understand:
This is a measurement of how well a window is insulated. When the indoor and outdoor temperatures meet, there will be heat loss or heat gain through your windows. Your windows should have the ability to control the heat flow to and from your windows. The lower a window’s U-factor, the better it is at providing insulation.
This refers to the amount of air that passes through your windows. If energy efficiency is important to you, look for a window with 0.30 air leakage or less. It’s also important to ensure the window is installed by an experienced, skilled window company because the quality of the installation has a major impact on the performance of the window.
Solar Heat Gain Coefficient (SHGC)
The higher the SHGC, the more heat the window admits into the home, so you want to look for windows with a low SHGC. You can also lower the SHGC value (expressed with a number between 0 and 1) by adding special coatings to your windows.
Have more questions about how to ensure you’re choosing high-quality, energy-efficient windows for your home improvement project? Renewal by Andersen of Philadelphia is always ready to help you with our expert window installation services. Call us today at (610) 813-6777. We work with homeowners in Philadelphia and New Jersey.