Deep Energy Retrofit Innovation and Design
Innovation and Design




1970’s Ranch House

• 2,430 square feet on both levels

• Original house - 2x4 walls, R-19 in attic, no basement insulation, single glazed windows with storms, AFUE 72 oil furnace, 3,400 CFM50

• Original furnace was replaced by a gas boiler and fan coil in 2001.

• Attic insulation upgraded to R-38 in 2001; to R-76 with radiant barrier in 2007.