Article: Heat-mirror glass reflects efficiency

Q. I want to get energy-efficient replacement windows for my home, and someone mentioned heat-mirror window glass. What is it, and is it very energy efficient?

A. Heat-mirror glass in new or replacement windows is extremely energy efficient, with an insulating value of five times that of ordinary single-pane glass. This glass can reduce your heating and cooling costs substantially and improve your comfort level year-round.

In addition to the energy savings, heat-mirror glass blocks most of the ultraviolet rays that fade your furniture and carpeting. And the high insulation value resists window condensation on the glass down to below-zero outdoor temperatures.

These windows are ...

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