Case Studies

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 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 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 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 describing a wall retrofit of a 1940s home in Phoenix AZ that included adding 2 inches of rigid polyisocyanurate insulation while adding stucco siding to a previously unsided and uninsulated slump-block 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 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 window retrofit of a 1970s cedar-sided home in Bellingham WA that included adding replacing the existing double-pane clear-glass windows with triple-pane windows.

Case study describing a window retrofit of a 1950s bungaloo home in Jackson MS that included replacing the original windows with triple-pane windows

Case study describing a window retrofit of a 1940s kit home in Kalamazoo MI that included adding interior low-e storm windows to previously upgraded double-pane windows.

Case study describing a window retrofit of a 1920s home in Long Island NY that included adding exterior low-e storm windows to previously upgraded double-pane windows.

Case study describing a window retrofit of a 1940s home in Phoenix AZ that included adding solar screens to previously upgraded windows.

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

Case study describing a 2014 DOE Zero Energy Ready Home that scored HERS 42 without PV and -1 with PV.

Case study describing a 2015 DOE Zero Energy Ready Home that scored HERS 41 without PV and 4 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Seattle, WA, that scored HERS 34 without PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in west Connecticut that scored HERS 39 without solar PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Exeter, Rhode Island, that scored HERS 43 without PV.

Case study about a Zero Energy Ready Home 2013 Housing Innovation Award Winner construction project in the marine climate.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Winter Park FL that scored HERS 57 without PV or HERS -7 with PV.

Case study describing a DOE Zero Energy Ready 2013 Housing Innovation Award Winner in Long Island, NY, that scored HERS 43 without PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Herriman, UT, that scored HERS 40 without PV, -1 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Ithaca, NY, that scored HERS 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner that scored HERS 52 without PV and -4 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Ellenton FL that scored HERS 53 without PV and HERS 23 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Phoenix, AZ that scored HERS 58 without PV and HERS 38 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner that scored HERS 41 without PV and HERS 3 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Frederick MD that scored HERS 43 without PV and HERS 28 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner that scored HERS 49 without PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Old Greenwich CT, that scored HERS 42 without PV and HERS 20 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winning production home in Devens MA that scored HERS 35 without PV or HERS -37 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Libertyville, IL that scored HERS 45 without PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner that scored HERS 37 without PV and -1 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award winning custom home in Devens MA that scored HERS 34 without PV or HERS -21 with PV.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award winning custom home in Downers Grove IL that scored HERS 35 without PV.

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 describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 30 without PV and 1 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 56 without PV and 15 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 38 without PV. and 0 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 35 without PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 45 without PV and 26 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 47 without PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 37 without PV and -13 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 37 without PV and -5 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 49 without PV and 44 with PV.

Case study describing performance data and energy-efficiency measures for a DOE 2014Housing Innovation Award winning home that was certified to the DOE Zero Energy Ready Home criteria.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 59 without PV

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 37 without PV and 7 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 51 without PV.