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Energy-Efficient Windows: FAQs

If you have been doing some research for your window replacement project, you’ll probably notice that many window experts, contractors and homeowners are partial when it comes to energy-efficient windows. It can be easy to see the advantages of these windows even at first glance. But you probably still have a few questions about them anyway.

Window and door replacement company Renewal by Andersen® of Memphis shares the answers to some of the most frequently asked questions about energy-efficient windows.

What Does Low-E Glass Mean?

When you’re shopping for new windows, your contractor will likely ask if you prefer to use low-e glass. Low-E, short for low remittance, is a type of window glass that reduces the transmission of UV rays from the outside to the inside. Apart from that, it is also designed to reduce glare and improve the thermal efficiency of a window. That said, opting for low-e glass could potentially mean lower cooling expenses.

What Are Gas-Filled Windows?

Glass-filled replacement windows are the product of modern window technology, which enables manufacturers to seal an inert gas between window panes and enhance the insulating property of a window. Argon is typically the gas used in this type of window since it is a better insulator than air.

What’s the Difference Between R-Value and U-Value?

R-value is mainly used in wall and ceiling insulation. That said, it is not recommended to refer to the R-value when looking at windows and other fenestration products. U-value is the more appropriate indication for these. Furthermore, lower U-values mean that the windows are more efficient in keeping heat and cold outside.

Looking for alternatives to vinyl replacement windows? You might want to consider the Fibrex® windows offered by Renewal by Andersen of Memphis. Made from a patent material, these energy-efficient windows have been tried and tested to last for many years. Call us at (901) 979-4460 or fill out our contact form to request a free quote.

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November 30

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