GSA field testing results are in: Alpen quad-pane windows demonstrated an average simple payback of under 2 years!
The U.S. General Services Administration (GSA) has finalized and published the results of its nearly year-long testing and evaluation of quad-pane windows manufactured by Alpen High Performance Products. Quad-pane windows with suspended film center panes and quad-pane windows with thin glass center panes were both tested and evaluated by the U.S. Department of Energy’s National Renewable Energy Laboratory as part of GSA’s Green Proving Ground (GPG) program.
The report measured the incremental cost difference between Alpen’s high performance quad-pane solutions and a high performance dual-paned, aluminum-framed window. The quad-pane windows reported an average simple payback of only 1.8 years. For new construction and window replacements, the quad-pane windows have payback between one and six years, depending on climate zone and utility rates.
Several other factors were tested and evaluated, such as energy savings, thermal comfort, ease of installation, and thermal performance. Click below to learn more!
“These quad-pane windows provided better thermal insulation and because they have the same weight and thickness as a double-pane window they were easy to install. By improving the building envelope, they can help contribute to our net-zero goals.”
–Tyler Cooper, Mechanical Engineer at GSA Denver Federal Center
GSA held a live webinar about this testing! Researchers and facility managers discussed findings from the project evaluation, shared operational guidance and answered questions from webinar attendees. You can watch the webinar here!
More GSA Testing: Alpen WinSert® Secondary Window Inserts Demonstrate Up to 18% Whole-Building Energy Savings in GSA Green Proving Ground Testing
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