Case Studies

Case study describing William Ryan Homes and their achievement of reducing whole house source energy use by 40% and receiving HERS scores of 65 to 70 by utilizing high efficiency heat pumps with engineered duct design.

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

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

Case study describing a new building project that partnered with Habitat for Humanity.

Case study describing a new construction project in North Carolina.

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 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 describing the design and testing of 10 high-performance homes in Farmington, Connecticut.

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

Case study describing a new construction project in the mixed-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 new construction project in the marine climate zone.

Case study describing a builder's technology package that achieves energy savings of 50% over standard practice compared to the 2006 IECC.

Case study describing a new construction project in Florida with a HERS score of 15.

Case study describing a new construction project in the marine climate zone.

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

Case study describing 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 describing 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 describing two new construction projects in Florida built to be net zero energy homes.

Case study describing a production builder that achieves HERS scores of 60, compared to 85 for other builders that build new homes to Florida code.

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 origins and operation of a Kalamazoo-based home performance contractor.

Case study describing the origin and operations of a large HVAC company specializing in whole-house energy efficiency that upgrades 400 homes per year.

Case study describing the growth and performance of a Rochester-based home energy performance company that increased revenues by nearly 2000% in 1 year.

Case study describing the growth of the home performance division of a Oregon-based remodeling company that saw revenues increase by 109% per year from 2006 to 2012.

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 growth of a Manassas-based home performance company that increased their annual number of projects from 13 to 79 between 2007 and 2012.

Case study describing the elimination of excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.

Case study describing how heat pump water heaters can be cost-effective alternatives to traditional electric resistance water heaters.

Case study describing the incorporation of insulating concrete forms (ICFs) into new home design and construction.

Case study describing techniques used to prevent thermal bypass in new homes.

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 describing the retrofit of a leaky air handler.