Another use for the space between Power Efficiency Guide System Review the glass panes is to hold a special gas that slows the transmission of heat. The name of the gas that is used makes the windows sound really efficient and high-tech. How would you like to have triple pane windows with low-e coating and krypton gas. Just the mention of gas, let alone Krypton, makes the windows sound strong and indestructible. It is the gas, krypton or argon, that is between the glass panes that allow the window to reach higher insulation values. With a triple pane window, there are two spaces to use for Low-E coatings and superman gas.
Let's look at some comparisons concerning energy efficiency between different window types. Remember, the higher the R-value and the lower the U-value, the better for saving energy. Values listed are representative of an average range for that window type. Replacing windows usually has a long pay-back period. The ROI return on investment is not encouraging. However, if the home is well insulated, air sealed, and the heating and cooling system is efficient, window replacement is a logical next step to increasing energy efficiency and saving energy.
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