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Climate Minute #2 Windows Appendix 2

 

Adding Interior Panes to Single-glazed Fixed Windows

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The WinSert Plus from Alpen Windows includes two panes, one of which has a low-E coating, effectively turning a single-glazed window into a triple glazed one. Efficiency will be a bit less than for a true triple-glazed, but at far less cost because the existing window doesn’t have to be removed. This seems a promising approach but we don’t yet have reviews on it. We welcome input from others with experience with this product or similar ones.

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