*NSTAR Gas provided over $12,000
in rebates for this project under its Gas Energy Efficiency
Program. DMI, an independent engineering consulting firm,
calculated the annual natural gas energy savings of about
5000 therms.
Using Advanced Energy Panels to insulate all existing windows
in this structure will translate to a 4.7-year payback before
the rebates are applied, and a 2.4-year payback after! |