Doors and Windows (cont., pg. 5)

 

Low – E  Windows

Lowering Energy Costs With Window Coatings

 NFRC and Energy Star label

 

Regardless of the type of window you choose, consider the E-Factor (emissivity) of the window.

Low-E glass is a proven energy saver.

Low-E coatings are virtually invisible layers of metallic oxide applied to glass for the purpose of reducing the flow of radiated heat.

With Low-E windows, radiant heat will tend not to pass from its original source.

Interior heat will be reflected back, minimizing winter heat loss through window glass.

Infrared solar radiation will be reflected back, saving energy on summer cooling.



While you’re window shopping, look for an NFRC and Energy Star label (above).  Different areas of the country have different rating needs, depending on climate.

You may compare the window rating against the established government energy-efficiency standards of the Department of Energy, by way of the Energy Star label.



Low-E glass costs more.  But when you consider that houses can lose upward of 20% of their heat via windows, Low-E windows are obviously a long-term money saver, and should be considered another part of your overall insulation package.

 

 

Read more about Windows and Doors...

 

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