[Skip to Content]
SFTool is undergoing site maintenance until Sunday (8/25). We apologize for any inconvenience.

Window, High R Value

Last Updated: 09/18/17

High performance or “Hi-R” windows use advanced technology to deliver up to a seven-fold improvement in a window’s thermal performance.

Product Details
Procurement Info

Where to Buy

  • No federal source identified
Life Cycle Cost Savings
GSA's Green Proving Ground found that installation of Hi-R panel retrofits could provide as much as a 41% heating savings in winter, or an 11% estimated savings for an entire buidling's heating and cooling demand. Estimated payback is 9 years for triple-pane retrofits and less for double-pane retrofits.
Guiding Principles
Contributes to meeting The Guiding Principles for High Performance and Sustainable Buildings
Additional Guidance
Highly insulating window panel retrofits are installed on top of existing windows. GSA's Green Proving Ground recommends double-pane retrofits for buildings in cold climates with single-pane windows but notes that site-specific evaluation is critical.
Related Workspaces Head to the explore section of SFTool to view related workspaces