Case Studies

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom spec homes in the cold climate that used 2x6, 16-inch on-center walls, R-72 unvented attic insulation, and 16.1 SEER mini-split heat pumps to achieve a HERS score of 19 with PV and 39 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 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 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 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 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 2020 Housing Innovation Award winning custom for buyer homes in the cold climate that used triple-pane windows and two 19 SEER ducted mini-split heat pumps to achieve a HERS score of -97 with PV and 37 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-dry climate that used 2x6, 16-inch on-center walls, and a 17 SEER central two-stage heat pump to achieve a HERS score of -6 with PV and 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 custom for buyers homes in the mixed-humid climate that used R-27 SIP walls, a SIP roof, R-47 SIP attic, and triple-pane windows to achieve a HERS score of -22 with PV and 38 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the cold climate that used a SIP shed roof, triple pane windows, and a 26.1 SEER ductless heat pump to achieve a HERS score of -20 with PV and 35 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the mixed-humid climate that used 2x6, on-center walls, 19-inch, R-50 blown fiberglass vented attic insulation, and triple-pane windows to achieve a HERS score of 42 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 a2x6, 24-inch on-center walls, R-80 vented attic insulation, and triple-pane windows to achieve a HERS score of -8 with PV and 29 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer homes in the marine climate that used R-29 SIP walls, R-59 graphite roof SIPs, and triple-pane windows to achieve a HERS score of -19 with PV and 33 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning attached home in the cold climate that used 2x6, 24-inch on-center walls and R-50 blown fiberglass attic insulation to achieve a HERS score of 29 with PV and 50 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom spec homes in the cold climate that used 20-inch R-50 blown fiberglass attic insulation and 6.9 kW rooftop solar panels to achieve a HERS score of 24 with PV and 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the mixed-humid climate that used 2x6, 24-inch on-center R-33 wall insulation, triple-pane windows and both ductless and ducted mini-split heat pumps to achieve a HERS score of -2 with...

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the cold climate that used R-22 ICF walls, R-63 unvented vaulted attic insulation, and triple-pane windows to achieve a HERS score of -11 with PV and 26 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom spec home in the cold climate that used a high efficiency 98 AFUE gas furnace, 5-stage 19 SEER heat pump, LED lighting, ENERGY STAR appliances, smart thermostats and lighting, and automated window blinds...

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 2020 Housing Innovation Award winning production homes in the mixed-humid climate that used an energy recovery ventilator tied to the home's high efficiency central heat pump with a MERV 13 filter to achieve a HERS score of 9 with PV and 46 without...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that used ENERGY STAR labeled appliances, WaterSense labeled fixtures, and 100% LED lighting to achieve a HERS score of 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the cold climate that used triple-pane windows, a hydronic radiant floor heating system, an electric vehicle charging station, and 7.3kW of rooftop-mounted solar panels to achieve a HERS...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer homes in the marine climate that achieved a HERS score of -19 with PV and 33 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the marine climate that used a large south-facing roof which holds over 80 solar panels and large, south-facing windows and concrete floors, which provide passive solar heating to...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning attached housing home in the cold climate that used high insulation levels in the attic, walls, and under the slab, with ENERGY STAR appliances, and solar PV panels to achieve a HERS score of 29 with PV and 50...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable multifamily home in the mixed-humid climate that used water-saving plumbing fixtures and irrigation and efficient hot water distribution by means of a heat pump water heater and PEX piping to achieve...

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the marine climate that achieved a HERS score of 0 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the marine climate that achieved a HERS score of -41 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of 34 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the mixed-dry climate that achieved a HERS score of 15 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS score of 43 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the marine climate that achieved a HERS score of 41 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the hot-humid climate that achieved a HERS score of -21 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the marine climate that achieved a HERS score of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of -25 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS score of 44 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the cold climate that achieved a HERS score of 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the hot-humid climate that achieved a HERS score of 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable housing in the cold climate that achieved a HERS score of 31 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 1 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 51 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the marine climate that achieved a HERS score of 0 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-dry climate that achieved a HERS score of 34 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the marine climate that achieved a HERS score of -13 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS score of 34 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS score of 51 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing project in the coldclimate that achieved a HERS score of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the mixed-humid climate that achieved a HERS score of 55 without PV.