RICHLAND, Wash. – Highly insulating triple-pane windows keep a house snug and cozy, but it takes two decades or more for the windows to pay off financially based on utility-bill savings, according to a report by energy efficiency experts at the Department of Energy's Pacific Northwest National Laboratory.
The findings are being presented Dec. 4, 2013 by PNNL research engineer Sarah Widder at the Buildings XII Conference in Clearwater Beach, Fla. The meeting is sponsored by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers).