One of the most important measurements for the energy efficiency of windows is U-Value. A window’s “U-Value” indicates the rate of heat flow through the window. The lower the number, the more energy-efficient the window is. Windows from a very popular manufacturer are available in double pane, and triple pane configurations with U-Factor ratings of .27 and .22 respectively. Consider that not too long ago Low-E coatings and argon gas fill were considered a new technology. Double pane windows without Low-E/Argon saw U-Values somewhere around .50. So what benefit did we see with modern use of Low-E/Argon? Replacing old windows with EnergyStar certified windows lowers household energy bills by an average of 12%. As society becomes more conscious of our impact on our environment home energy use accounts for roughly ¼ of the average person’s carbon footprint.
What will be the next popularized technology that will improve efficiency further? One answer could come from a local manufacturer, Vytex. Energy Saver R-5 Glass, offered by Vytex Windows, is the next generation in insulated glass units. It’s engineered to achieve the lowest possible U-values and the thermal efficiency of a triple pane window in a dual pane unit with 25% more insulation, keeping you warmer in the winter and cooler in the summer. In the end the Vytex R-5 glass offers U-Values of .22 in a double pane configuration, the same U-Value as the aforementioned triple pane window.