Energy-Efficient Windows: How Argon Gas and Low-E Coatings Maintain Interior Temperatures

If you are considering replacing windows in your home for the first time you might be surprised to learn that many energy-efficient windows are made with insulating gas.


Argon is a naturally occurring, odorless, colorless, and non-reactive gas that makes windows more energy-efficient. When an energy-efficient window is made, Argon (or another gas like Krypton) can be used to fill the space between panes. The panes themselves are often treated with a “low-e” coating. Low-e coatings minimize the amount of ultraviolet and infrared light passing through a surface without keeping visible light from coming through.

Double pane and triple pane windows, once manufactured, are infused with Argon or Krypton gas between the panes. The gas insulation, along with low-e coatings, keep the interior window pane close in temperature to the inside of your house.

Energy-efficient windows with insulating gas and low-e coatings should always be installed by experienced professionals. If your energy-efficient windows are not installed properly you might not be getting the benefits of these features.

All blog posts are written by employees of Kepo Siding & Windows. Thank you for reading! If you have questions or would like to learn more please email or call (908) 553-5850. Kepo is a fully licensed and insured home-improvement company based in Flemington, New Jersey.


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