Case study about new home construction in the hot-humid climate, part of a project building 100 new homes after hurricane Katrina.
Case study about a new home builder that strives to address health, safety, and durability issues in a hot and humid climate.
Case study about a home builder that has refined its home designs to achieve HERS scores of 49 to 56 on 40 to 70 homes per year.
Case study about design and testing 10 high-performance homes in Farmington, Connecticut.
Case study about a new construction building project of 20 luxury homes in northern New Jersey that were more energy efficient than ENERGY STAR and met the 50% energy savings requirements of the federal tax credit for new homes.
Case study about a production builder that achieves HERS scores of 60, compared to 85 for other builders that build new homes to Florida code.
Case study about new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.
Case study about energy efficienct new home construction that also incorporated moisture management techniques for durability in the damp Northwest climate.
Case study of a DOE Challenge Home in Winter Park FL that scored HERS 57 without PV or HERS -7 with PV. This 4,305 ft2 custom home has autoclaved aerated concrete walls, a sealed attic with R-20 spray foam, and ductless mini-split heat pumps.
Case study about the first certified DOE Zero Energy Ready Home—the “Wilson Residence” in Winter Park, Florida.
Case study detailing techniques used to prevent thermal bypass in new homes.
Case study about one builder's conversion to high-performance building in the hot-humid regions of the Atlantic seaboard.
Case study exploring how heat pump water heaters can be cost-effective alternatives to traditional electric resistance water heaters.
Case study about retrofitting a leaky air handler.
Case study about an energy efficient retrofit project in hot-humid climates.
Case study about cost-effectively reducing energy use by over 50% in an existing home.
Case study about 50% energy savings projects for new multifamily homes in cold climates.
Case study about 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 builder's technology package that achieves energy savings of 50% over standard practice compared to the 2006 IECC.
Case study about new home construction in the marine climate that achieved 50% savings over the 2004 IECC.
Case study about a new construction building project of 20 homes that earned HERS scores that represent greater than 50% energy savings in heating and cooling over the 2004 IECC.
Case study of a DOE Zero Energy Ready Home in Old Greenwich CT, that scored HERS 42 without PV or HERS 20 with PV. This 2,700 ft2 custom home has advanced framed walls with R-24 blown cellulose plus R-7.5 EPS rigid foam, membrane-coated OSB, a close-cell spray foamed attic, R-13 closed-cell spray foam under the slab and on basement walls, an ERV, and a gas boiler for forced air and radiant floor heat.
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 of a DOE Zero Energy Ready Home in Libertyville IL that scored HERS 45 without PV. This 2,763 ft2 custom home has advanced framed walls with R-20 of open-cell spray foam, R-49 open-cell spray-foam sealed attic, an HRV, and a tankless water heater for hydro coil furnace with high-velocity, small-diameter ducts.
Case study of a DOE Zero Energy Ready Home in Devens MA that scored HERS 34 without PV or HERS -21 with PV. This 3,168 ft2 custom home has R-46 double-stud walls, a vented attic with R-67 blown cellulose, plus R-10 rigid XPS under the slab, R-20 closed-cell spray foam on basement walls, triple-pane windows, and mini-split ductless heat pumps.
Case study of a DOE Zero Energy Ready Home in Downers Grove IL that scored HERS 35 without PV. This 3,600 ft2 custom home has advanced framed walls with R-23 dense-packed fiberglass plus R-13 rigid polyiso, a sealed attic with open-cell spray foam, a pier foundation, and 95% efficient gas furnace.
Case study about a DOE Zero Energy Ready Home in Frederick MD that scored HERS 43 without PV, HERS 28 with PV. This 4,516 ft2 custom home comes standard with a geothermal heat pump, SIP walls, spray-foamed unvented roof, and ERV.
Case study about a DOE 2014 Housing Innovation Award winner.
Case study about a DOE Zero Energy Ready Home in Devens MA that scored HERS 35 without PV or HERS -37 with PV. This 2,508 ft2 custom home has R-46 double-stud walls with open–cell spray foam, a vented attic with R-67 blown cellulose, plus R-10 rigid XPS under the slab, R-20 closed-cell spray foam on basement walls, triple-pane windows, and one mini-split ductless heat pump.
Case study about a Zero Energy Ready Home construction project in the marine climate.
Case study describing a package of energy- efficiency measures for new manufactured homes in the Pacific Northwest, including triple-pane highly efficient windows.
Case study illustrating how to replace variable speed furnace motors.
Case study about a DOE Building America 2012 Top Innovation on ventilation strategies in hot and humid climates developed and assessed by Florida Solar Energy Center.
Case study about the benefits of replacing resistance heating systems with mini-split heat pumps in cold and mixed-humid climates.
Case study describing a method for evaluating safe installation and operation of combustion appliances in homes undergoing energy efficiency upgrades where indoor air is used for combustion and venting.
Case study describing how combination (combi) space and water heating systems can be used in homes with efficient thermal enclosures, decreasing energy consumption and costs.
Case study describing a stand-off furring strategy that minimizes the physical connections to each existing wall stud, uses spray foam to encapsulate existing siding materials (including lead paint), and creates a vented rain screen assembly to promote drying.
Case study describing steps for properly designing a hydronic system for setback operation, which are applicable to new construction and retrofit applications.
Case study describing the first DOE Zero Energy Ready Home in Georgia that achieved a HERS score of 40 without PV and -10 with PV.
Case Study describing a DOE Zero Energy Ready Home construction project in Florida that recieved a HERS score of 49.
This case study about a DOE Building America 2013 Top Innovation features a community-scale project in Tucson, AZ, where solar water heaters generated enough hot water per year to recoup the cost of the system within 4 to 6 years.The homes were built by Pulte with technical assistance from DOE Building America research partners IBACOS and Building Science Corporation.
The home is the builder’s fi rst home certifi ed to the Passive House Institute standard and their fi rst certifi ed to the high energy performance standards of the U.S. Department of Energy’s Zero Energy Ready Home program.
This certified DOE Zero Energy Ready Home, is the first home in the world to use a tri-generation system to supply electricity, heating, and cooling on site.
Case study aimed at helping contractors and building owners choose the best ventilation for existing homes.
Case study on a DOE 2014 top innovation about research on high MERV filters used in HVAC systems conducted by Building America research partner Davis Energy Group.
Case study on a DOE 2014 top innovation about the development and testing of a new attic insulation method for dense packing the shallow attic space in manufactured homes with blown fiberglass insulation; research was conducted by the Levy Partnership.
Case study describing a DOE 2014 top innovation on development of a standardized testing method for testing the air leakage of HVAC air handlers and furnace cabinets developed by Lawrence Berkeley National Laboratory.
Case study on a DOE 2014 top innovation on research that was instrumental in developing and gaining adoption of the ASHRAE 62.2 ventilation standard. The research and standards work was conducted by Lawrence Berkeley National Laboratory, and Building America research partners Building Science Corporation, Florida Solar Energy Center, Washington State University Energy Office, Building Research Council at the University of Illinois, Southface, Pacific Northwest National Laboratory, and Davis Energy Group, among others.
Case study about the Green Home 3 project, which achieved a 44% whole-house energy savings over the Building America New Construction B10 Benchmark, DOE Zero Energy Ready Home certification, and National Green Building Standard Gold-level certification.
Case study about analysis of pre-retrofit utility data from 1,166 houses to help determine energy savings on a community-scale.
Case study about a deep energy retrofit, turning an old school into 12 high-end apartments in Greenfield, MA.
Case study describing a heating system retrofit in an existing apartment building complex which included advanced boiler controls and reduced heating gas consumption by about 20%.