Measuring Window U-Factors with IR Thermometers

A version of this article appears in the May/June 2012 issue of Home Energy Magazine.

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BY Ian Shapiro, Kapil Varshney and Javier E. Rosa

April 24, 2012

Imagine standing next to a single-pane metal-frame window in a multifamily building in winter, and putting your hand on the window. It's cold, right? Now imagine a triple-pane R-5 window. Put your hand on that—much warmer, right?

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