Green Commitment
Energy Performance Low-E Glass and Argon Gas
Low-E Glass and Argon Gas
Out of the many different styles of homes in Dallas - Fort Worth we see every day, it might be hard to realize, but each one of those homes will have different heating and cooling requirements to enable that homeowner to achieve the utmost in year round comfort within their home. Just as the ENERGY STAR label depicts different heating and cooling needs for northern and southern climates, so too must a replacement window prove to be versatile enough to be efficient in many different climate or seasonal situations.
That is why the exclusive Window World SolarZone™ Glass Packages rely on the many energy performance characteristics of Low-E Glass. Shown below are three of the most critical performance requirements that should be considered when choosing an energy efficient glass unit for your new windows. It is important to note however, that since the benefits of Low-E Glass and Argon Gas only are depicted below, the center of glass measurements have been displayed. Window performance may differ between models, glass options and sizes.
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Improving a Window’s Winter U-Factor Performance. The U-Factor (also referred to as U-Value) is a number that represents the rate of heat flow through a glazing system. The lower the U-Factor, the greater a window’s resistance to heat flow, and the better its insulating value. This performance is critical to those homeowners who may experience increased heating conditions not only during the winter months, but very possibly late fall and early spring as well. The SolarZone™ unit will outperform the standard clear unit by as much as 51%. |
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A Solution for solving the Solar Heat Gain Coefficient Dilemma. The solar heat gain coefficient (SHGC) is a number that represents the fraction of solar radiation admitted through a window, both transmitted and absorbed, and subsequently released inward. The lower a window’s solar heat gain coefficient, the less solar heat it transmits, which therefore leads to greater shading ability. Climates that rely heavily on air conditioning will benefit from a window product that displays a lower SHGC. As shown, the SolarZone™ Low-E unit will outperform the standard clear unit by as much as 49%. |
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Reducing UV Energy While Maintaining the Visible Light. Ultraviolet light (UV) are the invisible rays of the spectrum, and are found in everyday sunlight. These rays of light are responsible for the fading of carpets, fabrics and even paint finishes. Visible light is simply that, the portion of the electromagnetic spectrum that produces light that can be seen. SolarZone™ Low-E Glass reduces harmful UV rays by as much as 72%, while still allowing about 88% as much visible light as a standard clear unit. |
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Heat Photographs (Infrared Thermography)
The window on the left is a clear insulated glass unit. The heat transmittance, indicated by the green, yellow and orange colors from the heat scale, is far more apparent than that of the window containing the SolarZone™ Low-E insulated glass unit.
| More Solar Heat Transmitted |
Heat Scale | Less Solar Heat Transmitted |
