Building Components

Case Studies » Proven Performance Case Studies

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 about the first certified DOE Zero Energy Ready Home—the “Wilson Residence” in Winter Park, Florida.

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 a whole-house energy efficient retrofit in the hot-humid climate.

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 about a Zero Energy Ready Home new construction project in Connecticut, that also achieved many other green building certifications.

Case study about a Zero Energy Ready Home new construction project in Connecticut, that also achieved many other green building certifications.

Case study about a Zero Energy Ready Home construction project in the cold climate.

Case study about a Zero Energy Ready Home construction project in the cold climate.

Case study about a Zero Energy Ready Home construction project in the cold climate.

Case study about a Zero Energy Ready Home construction project in the cold climate.

Case study about a Zero Energy Ready Home construction project in the cold climate.

Case study about a Zero Energy Ready Home construction project in the mixed-humid climate.

Case study about a Zero Energy Ready Home construction project in the hot-dry climate.

Case study about a Zero Energy Ready Home construction project in the cold climate.

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 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 Building America case study 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 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 providing research results, and outlining the benefits of high MERV filters used in HVAC systems.

Case study with research results aimed at developing and testing a new attic insulation method that involves dense packing the shallow attic space in manufactured homes with blown fiberglass insulation.

Case study describing research results that helped develop a standardized testing method for testing the air leakage of HVAC air handlers and furnace cabinets.

Case study describing Building America research that was instrumental in developing and gaining adoption of the ASHRAE 62.2 ventilation standard.

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%.