Energy efficiency is all the rage nowadays. As a homeowner, you can contribute to energy conservation and at the same time, save on energy bills through simple ways. One such way is choosing ENERGY STAR® products for your planned window replacement project.
Not all windows are created equal. It’s necessary to look at the features and ratings to ensure that a product is indeed energy-efficient. Looking for the ENERGY STAR® label is one of the main indicators that a window is energy-efficient, but how is it determined?
The Factors That Matter
Replacement windows can qualify for an ENERGY STAR rating if they meet the requirements based on these three factors:
U-Factor – This indicates how much heat can flow through the window assembly. The lower the U-factor value, the better the window’s insulation.
Solar Heat Gain Coefficient – This indicates how much heat-causing light can penetrate the window. The lower the SHGC value, the less solar heat gets into the home through the window.
Air Leakage – This indicates how much air does the window frame and joints allow to flow. The lower the AL value, the less air flows through the window.
It Depends on the Region
Before a replacement window gets an ENERGY STAR rating, it’s necessary to determine where it will be sold or installed.
In northern climates, windows need to have a low U-factor but higher SHGC, as these mean that the window is properly insulated while still being able to take advantage of passive solar heat.
Meanwhile, in southern climates, windows need to have minimum U-factor and lower SHGC. This is because adequate insulation is still needed in these areas but windows need not contribute additional passive heat.
We Are Your Source for Top-Notch ENERGY STAR Windows
Renewal by Andersen of Denver offers ENERGY STAR-rated window replacement options that are rated for our state’s climate. Give us a call today at (303) 823-4312 or (719) 419-5496. You can also fill out our contact form to schedule a free consultation. We serve clients in Denver and nearby areas.