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Case study describing a production builder that achieves HERS scores of 60, compared to 85 for other builders that build new homes to Florida code.

Case study describing whole house building techniques in the hot-dry climate.

Case study describing a new home builder that strives to address health, safety, and durability issues in a hot and humid climate.

Case study describing a 4,763 ft2 certified Passive House that achieved HERS 27 without PV through the construction of R-54 walls that use ICF plus fiberglass cavity insulation, an R-100 vented attic, extensive air sealing and flashing, triple-pane windows, ductless heat pumps, and solar hot water.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that used 2x6, 24-inch on-center blown fiberglass wall insulation, OSB roof sheathing, and R-49 blown fiberglass attic insulation to achieve a HERS score of 50...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the cold climate that used R-22 ICF walls, an ICF insulated basement, and an R-50 cellulose attic insulation to achieve a HERS score of 49 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning production home in the mixed-humid climate that used 2x6 24-in. o.c. walls, an R-49 insulated attic, and an unvented insulated crawl space to achieve a HERS score of 46 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning attached home in the mixed-humid climate that used 2x6 16-inch on-center walls, an R-49 insulated attic, and an insulated conditioned basement to achieve a HERS score of 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer homes in the cold climate that used R-44 insulation in the double walls, R-60 blown fiberglass attic insulation, and triple-pane windows to achieve a HERS score of 14 with PV and 44...

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the cold climate that used 2x6, 24-inch on-center walls, R-60 roof insulation, and R-60 blown-in fiberglass attic insulation to achieve a HERS score of 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that used 2x6, 24-inch on-center walls, R-49 roof insulation, and R-49 blown-in cellulose attic insulation to achieve a HERS score of 9 with PV and 46 without PV...

Case study describing the elimination of excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the cold climate that used above-grade walls filled with 5.5 inches of open-cell spray foam and sheathed with an R-6.5 insulated coated OSB sheathing, providing a continuous air barrier and...

Case study describing a DOE Zero Energy Ready Home 2017 Housing Innovation Award winner that scored HERS 38 without PV and 4 with PV.

Case study describing a whole-house, deep energy retrofit project in the marine climate.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the hot-humid climate that used 2x6, 24-inch on-center walls with 5.5-inch open-cell spray foam insulation and OSB sheathing, triple-pane windows, and 20-inch, R-60 blown-in cellulose...

Case study describing the retrofit of a 1960s split-level home.

Case study describing a wall retrofit of a 1940s kit home in Kalamazoo MI that included adding 1 inch of rigid polyisocyanurate insulation while replacing siding the vinyl siding to the home.

Case study describing a wall retrofit of a 1970s cedar-sided home in Bellingham WA that included adding 2 inches of cork insulation while replacing the existing cedar siding.

Case study poster describing a DOE Zero Energy Ready Home 2016 Housing Innovation Award winning affordable home in the cold climate that used R-43, 2x6, 24-inch on center walls wrapped in 3 two-in. layers of XPS, a vented attic with 20-inch, R-80 blown cellulose insulation, R-22.5 ICF foundation...

Case study describing a wall retrofit of a 1950s bungaloo home in Jackson MS that included adding 1 inch of rigid XPS insulation while replacing aluminum siding with vinyl siding on the home.

Case study describing a wall retrofit of a 1920s home in Long Island NY that included adding 1 inch of rigid foam insulation over existing stucco and covering with vinyl siding on the home.

Case study describing a wall and window retrofit of a 1940s kit home in Kalamazoo MI that included adding 1 inch of rigid polyisocyanurate insulation and low-e storm windows while replacing vinyl siding on the home.

Case study describing the first certified DOE Zero Energy Ready Home—the “Wilson Residence” in Winter Park, Florida.

Case study describing a four-square Concord home retrofitted by Building Science Corporation in Massachusetts.

Case study describing a wall and window retrofit of a 1950s bungaloo home in Jackson MS that included adding 1 inch of rigid XPS insulation while replacing aluminum siding with vinyl siding and replacing the original windows with triple-pane windows.

Case study describing a wall and window retrofit of a 1970s cedar-sided home in Bellingham WA that included adding 2 inches of cork insulation while replacing the existing cedar siding and replacing the double-pane windows with triple-pane windows.

Case study describing a wall and window retrofit of a 1920s home in Long Island NY that included adding 1 inch of rigid foam insulation over existing stucco and covering with vinyl siding on the home, then adding exterior low-e storm windows to previously upgraded double-pane windows.

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

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom spec homes in the marine climate that used 2x6, 24-inch on-center walls, R-50 to R-70 average roof insulation, and triple-pane windows to achieve a HERS score of 51 without PV.