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An FAQ on Energy-efficient Windows

Energy-efficient windows are popular right now so it’s not surprising to find a lot of homeowners having a lot of questions about it. As the leading window company in the area, we had our team of experts answer some of the most common questions about energy-efficient windows.

Energy-efficient Windows

What Is the R-value of a Window?

The R-value is a number that represents a window’s ability to minimize the amount of heat passing through it. In other words, it’s a numerical estimate of a window’s thermal resistance. The higher the R-value, the better your windows will be at providing insulation.

Can Glass Be Insulated?

You will occasionally hear the term “insulated glass” when looking for energy-efficient replacement windows, but it’s actually a bit of a misnomer. The glass panes themselves are not insulated, but the gaps between multiple glass panes combined with an airtight sealant improves a window’s ability to provide insulation.

What Are Gas Filled Windows?

Some windows with insulated glass can have special gasses like argon or xenon pumped into the space between the glass panes. These gases absorb and release heat much slower than regular air, so it improves the window’s overall thermal resistance and insulating capabilities.

What Is Low-E Glass?

Some windows will have Low-E or low emissivity glass panes. For these windows, the glass panes are protected by a special coating that helps them reflect a significant amount of heat and UV rays away from the home. Multi-pane casement windows with low-E glass will greatly outperform a similar window with regular glass.

Have energy-efficient windows installed by our team of experts. Renewal by Andersen of Kansas City is the leading window contractor in Kansas City, MO. You can call us at (913) 385-1300 or fill out this contact form to request a free quote.

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