Visitors Now: | |
Total Visits: | |
Total Stories: |
Story Views | |
Now: | |
Last Hour: | |
Last 24 Hours: | |
Total: |
While comfort and other benefits are more immediate, it takes two decades or more for the triple-pane highly insulating 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 (PNNL). Read more »