If you’re shopping for new windows, you’ve probably heard the term “Low-E”. But what exactly is it and how does it factor in when considering your purchase? The simplest definition: Low-Emittance or Low-E, is a thin, colorless coating that is applied to window glass to reflect heat.
There’s a whole lot of interesting science behind Low-E and how it actually works, so if you’re a fan of cool charts like this one and terms like “solar energy spectrum” you can satisfy your thirst for in-depth Low-E knowledge by visiting PPG’s website.
What we like about PPG’s explanation is this analogy: “Low-E glass works the same way a thermos does. A thermos has a silver lining, which reflects the temperature of the drink it contains back in. The temperature is maintained because of the constant reflection that occurs, as well as the insulating benefits that the air space provides between the inner and outer shells of the thermos…similar to an insulating glass unit.”
Windows with Low-E glass are much more thermally effective, helping you save on heating and cooling costs. In addition to increased energy efficiency, Low-E also helps reduce the amount of transmitted ultraviolet light, saving your carpets, fabrics, drapes, and floors from sun damage.
When you combine Low-E coating with other insulating factors, like two or three panes of glass (referred to as double or triple glazing), and insulating gas such as Argon or Krypton, you increase the energy efficiency of the window even more and typically meet ENERGY STAR requirements.
Learn more about Harvey’s energy-efficient products on our website. Or, if you’re ready to talk to a contractor about the type of windows you need, visit HBP ProZone to find an experienced professional in your area.