Case Studies

Case study poster describing a DOE Zero Energy Ready Home 2019 Housing Innovation Award winning custom for buyer home in the mixed-humid climate that achieved a HERS score of 12 with PV and 53 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2019 Housing Innovation Award winning custom-for-buyer home in the mixed-humid climate that achieved a HERS score of -13 with PV and 46 without PV.

Case study describing project and performance data and energy-efficiency measures for a DOE 2019 Housing Innovation Award winning home that was certified to the DOE Zero Energy Ready Home criteria.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer homes in the hot-humid climate that used R-17.5 SIP walls, R-31 SIP roof, and triple-pane windows to achieve a HERS score of 2 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 marine climate that used 2x6, 24-inch on-center, R-21 cavity wall insulation, and a 19 SEER mini-split heat pump to achieve a HERS score of 0 with PV and 56 without PV.

Case study poster describing the second phase of Mutual Housing development at Spring Lake. This second phase is building on the success of the first with expanded P.V. systems and improved overall design that enables each unit to have an average monthly energy bill of only $2 and a HERS rating...

Case study describing a DOE Zero Energy Ready Home 2017 Housing Innovation Award winning custom for buyer home in the hot-dry climate that achieved a HERS score of -92 with PV and batteries and 43 without PV.

Case study describing analysis of pre-retrofit utility data from 1,166 houses to help determine energy savings on a community-scale.

Case study describing a retrofit project in the hot-dry and mixed-dry climate zones.

Case study describing a multifamily, affordable housing retrofit project that achieved 44% energy savings using readily available, cost effective measures.

Case study describing a retrofit project in the hot-dry and mixed-dry climate zones.

Case study describing ductwork installation.

Case study describing a retrofit project in the marine climate.

Case study describing a retrofit project in the hot-dry climate.

Case study describing a retrofit project in the hot-dry climate.

Case study describing a retrofit project in the marine climate.

Case study describing a building project in the mixed-humid climate zone.

Case study describing a building project in the mixed-humid climate zone.

Case study describing a building project in the mixed-humid climate zone.

Case study describing Ferrier Custom Homes’ “Zero-Energy Casita” project, a new construction utilizing SIPS to achieve a HERS score of 30.

Case study describing a new home construction project in the hot-humid climate.

Case study describing the processes behind the building of the homes making up the Callaway Gardens community, as well as the challenges brought out due to it's proximity to nature and homebuyers not valuing energy efficiency until they've experienced it.

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.

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 the 32 home development Fallen Leaf Project and how it's construction technique and materials gives owners as much as 50% savings on their utility costs.

Case study describing a new home construction project in the hot-dry climate.

Case study describing a demonstration zero net energy home project in Las Vegas, NV.

Case study describing a building project in the hot-dry and mixed-dry climate zones.

Case study describing one builder's conversion to high-performance building in the hot-humid regions of the Atlantic seaboard.

Case study describing a new construction project in North Carolina.

Case study describing a building project in the marine climate.

Case study describing a building project in the hot-dry and mixed-dry climate zones.

Case study describing a building project in the hot-humid climate zone.

Case study describing a builder in Georgia that designs energy-efficient homes for a green community, yielding homes with HERS scores as lowas 59 and electric bills as low as $50 a month.

Case study describing a building project in the marine climate.

Case study describing the origins and growth of a Los Angeles-based home performance company that has increased their annualized revenues by nearly 8 times in 2 years of business.

Case study describing the growth of a Decatur-based home performance company, that started as an off shoot of a design-build firm and has since increased their number of projects by 53% in 2 years.

Case study describing the performance of air-to-water heat pump systems in dry climates.

Case study describing installation of exterior rigid foam insulation on a slab foundation.

Case study describing the benefits of replacing resistance heating systems with mini-split heat pumps in cold and mixed-humid climates.

Case study describing the best practices, costs, and savings associated with balancing steam distribution systems through increased main line air venting, radiator vent replacement, and boiler control system upgrades.

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