When window companies Chicago are calculating the air leakage of a window, it can be a bit complex. They would have to take into account both square and cubic measurements as well as wind speed. The unit of measure used to calculate air infiltration is ‘cubic feet per minute per square foot. Here the air leakage rating tells us how many cubic feet of air is able to pass through a window in one minute with the wind blowing at a constant speed of 25 mph divided by the total area of the window. Pretty simple, right?
You may think that calculating air leakage is complicated and overwhelming, don’t worry because our window company Chicago is here to set the record straight. The NFRC label will display the air leakage rating and other metrics to provide you with an overall energy score. It will make it easy to compare the air leakage ratings to different window lines and options, so you know what you’re getting. The only thing that you need to know is the lower the air leakage rating, and the less air will be able to pass through the window. In order for a window to receive an ENERGY STAR®️ rating, it must have an air leakage rating of 0.30 or lower.
If your windows have leakage ratings of 0.50 or higher down to 0.002 ratings, you’ll notice a significant difference in your home. The reduced air leakage and other energy-efficient components of our windows will help maintain a comfortable and consistent temperature throughout your home. When you do a window repair or have a window replacement, you can expect the thermal performance of your entire home to improve.