Case Studies

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning attached home in the cold climate that used panelized wall construction with 2x6 24-in. o.c. walls, aerosolized acrylic sealant, and R-60 blown fiberglass in attic to achieve a HERS score of 50 without PV...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning affordable home in the cold climate that used 2x6 24-in. o.c. walls, an R-60 vented attic, a ductless mini-split with transfer fans over bedroom doors, and triple-pane windows to achieve a HERS score of...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the cold climate that used 2x6 24-inch on-center walls, R-50 fiberglass in the attic, an unvented crawlspace, and 4.125 kW of solar PV to achieve a HERS 26 with PV and 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning production home in the cold climate that used R-39 double walls, R-50 fiberglass in attic, 9.88 kW of solar panels, and 10 kW of battery storage to achieve a HERS score of 9 with PV and 42 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used 2x4 16-in. o.c. walls, R-50 fiberglass in attic, R-10 rigid polyiso on basement walls, and aerosolized acrylic sealant to achieve a HERS score of 35...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used R-53 double walls, R-70 cellulose in attic, triple-pane windows, 25 kW of solar panels, and a mini-split heat pump for a HERS score of 31 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used R-22 ICF walls, a spray-foamed attic and slab, triple-pane windows, and 13.74 kW solar PV roof shingles to score HERS -13 with PV or 26 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning multifamily home in the cold climate that achieved a HERS -14 with PV or HERS 31 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS -2 with PV or HERS 42 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom-for-buyer home in the cold climate that achieved a HERS 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS 33 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning affordable home in the cold climate that achieved a HERS 34 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS 3 with PV or HERS 35 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning multifamily home in the cold climate that achieved a HERS 0 with PV or HERS 28 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom-for-buyer home in the cold climate that achieved a HERS 51 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning production home in the cold climate that achieved a HERS 23 with PV or HERS 53 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom-for-buyer home in the cold climate that achieved a HERS -8 with PV or HERS 42 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning production home in the cold climate that achieved a HERS 29 with PV or HERS 53 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2023 Housing Innovation Award winning custom-for-buyer home in the cold climate that achieved a HERS -8 with PV or HERS 29 without PV.

Case study describing a DOE Zero Energy Ready Home 2023 Housing Innovation Grand Award winning multifamily home in the cold climate that achieved a HERS -14 with PV or HERS 31 without PV.

Case study describing a DOE Zero Energy Ready Home 2023 Housing Innovation Grand Award winning affordable home in the cold climate that achieved a HERS 34 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the very cold climate that achieved an ERI of 36 without PV.

Description: Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 30 without PV and an ERI of -20 with PV.

Description: Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning production home in the cold climate that achieved an ERI of 50 without PV and an ERI of 39 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 43 without PV and an ERI of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 33 without PV and an ERI of 10 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning production home in the cold climate that achieved an ERI of 41 without PV and an ERI of -1 with PV.

Case study describing approaches to comprehensive retrofits that are in reach of the ordinary builder.

Case study describing a retrofit project in the cold and very-cold climate zones.

Case study describing a cost-effectively reducing energy use by over 50% in an existing home.

Case study describing an energy efficient renovation in the cold climate.

Case study describing a retrofit project in the cold and very-cold climate zones.

Case study describing a new home construction project in the cold climate.

Case study describing the family-run Treasure Homes that achieved a HERS rating of 46 without PV on its prototype “Gem” home, located on the blustery shores of Lake Michigan in northern Indiana.

Case study describing 50% energy saving projects for new multifamily homes in cold climates.

Case study describing the design and testing of 10 high-performance homes in Farmington, Connecticut.

Case study describing a new construction building project of 20 luxury homes in northern New Jersey that were more energy efficient than ENERGY STAR and met the 50% energy savings requirements of the federal tax credit for new homes.