Window, High R Value
Last Updated: 02/27/24
High performance or “Hi-R” windows use advanced technology to deliver up to a seven-fold improvement in a window’s thermal performance.
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GSA's Green Proving Ground
Life Cycle Cost Savings
Life Cycle Costing (LCC) aims to quantify the financial impact of a product over its entire life cycle to assist consumers in making decisions that will save them money over the long term.
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 Sustainable Federal 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.
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