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Case study poster describing a DOE Zero Energy Ready Home 2016 Housing Innovation Award winning custom spec home in the mixed-humid climate that used a vented attic with R-50 blown cellulose, triple-pane windows, and a 15.5 SEER heat pump to achieve a HERS score of 0 with PV and 42 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 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 attached home in the cold climate that used R-61, 16-inch blown cellulose attic insulation, triple-pane windows, and a 17 SEER central heat pump to achieve a HERS score of 32 with PV and 48 without PV.

Case study poster 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...

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 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 whole-house, deep energy retrofit project in the marine climate.

Case study poster describing a DOE Zero Energy Ready Home 2016 Housing Innovation Award winning production home in the mixed-dry climate that used 2x6 24-inch on-center walls, with R-17 spray foam in cavities + R-4 continuous rigid foam exterior, an unvented attic with R-25 open-cell foam insulation...

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom home in the cold climate that used 2x6, 24-inch on-center advanced framed walls, R-66 unvented attic insulation, and a 36 SEER mini-split heat pump to achieve a HERS score of -8 with PV and 42...

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 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 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 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 describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 69 without PV and -1 with 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 describing an alternative ground source heat pump (GSHP) cold-climate application in an attempt to reduce the installation cost of the ground loop portion by containing the entire loop beneath the basement slab.

Case study describing how a properly designed duct system is essential for keeping a home comfortable, managing indoor air quality, and maximizing the performance of heating and cooling equipment.

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 energy efficient new home construction that also incorporated moisture management techniques for durability in the damp Northwest climate.

Case study describing 50% energy saving projects for new multifamily homes in cold climates.

Case study describing an energy efficient retrofit project in hot-humid climates.

Case study describing new home construction in the marine climate that achieved 50% savings over the 2004 IECC.

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 new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.