Case study describing a year-long evaluation on residential hot water heating systems in a laboratory environment, regarding the evaluation of two residential electric heat pump water heaters (HPWHs), a solar thermal system utilizing a polymer glazed absorber, and a high efficiency natural gas...
Case study describing a DOE Building America 2013 Top Innovation community-scale project where solar water heaters generated enough hot water per year to recoup the cost of the system within 4 to 6 years.
Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 45 without PV and 32 with PV and is the first home in the world to use a tri-generation system to supply electricity, heating, and cooling on site.
Case study poster describing a DOE Zero Energy Ready Home 2016 Housing Innovation Award winning custom for buyer home in the hot-humid climate that achieved a HERS score of 5 with PV and 60 without PV.
Case study poster describing a DOE Zero Energy Ready Home 2016 Housing Innovation Award winning custom spec home in the hot-humid climate that used concrete block walls, and a 15 SEER heat pump to achieve a HERS score of -8 with PV and 48 without PV.
Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the hot-humid climate that used 5.5-inch, R-20 open-cell spray foam wall insulation, and a 17.5 SEER ducted mini-split heat pump to achieve a HERS score of 44 without PV.
Case study describing a 1963 mid-century modern home in Las Vegas that got an energy-efficiency overhaul, improving performance from a HERS score of 123 to 44, or net-zero when the 4.8 kW of photovoltaic panels are added.