Case Studies

Case study describing a year-long evaluation on residential hot water heating systems in a laboratory environment, regarding the evaluation of two residential electric heat pump water heaters (HPWHs), a solar thermal system utilizing a polymer glazed absorber, and a high efficiency natural gas...

Case study describing a DOE Building America 2013 Top Innovation community-scale project where solar water heaters generated enough hot water per year to recoup the cost of the system within 4 to 6 years.

Case study describing a DOE Zero Energy Ready Home 2013 Housing Innovation Award Winner in Ellenton FL that scored HERS 53 without PV and HERS 23 with PV.

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 55 without PV and 15 with PV.

Case study describing one of three deep energy renovations of occupied affordable homes.

Case study describing the family-run Treasure Homes that achieved a HERS rating of 46 without PV on its prototype “Gem” home, located on the blustery shores of Lake Michigan in northern Indiana.

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 building project in the hot-humid climate zone.

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 a six month study that monitored performance of a heat pump water heater.