Measured Whole-House Performance of TaC Studios Test Home

Stacey Rothgeb, Stacey Rothgeb (NREL Technical Monitor)

Research output: NRELSubcontract Report


As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta-based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA in the mixed humid climate. This home serves as a residence and home office for the firm's owners, as well as a demonstration of their design approach topotential and current clients. Southface believes the home demonstrates current best practices for the mixed-humid climate, including a building envelope featuring advanced air sealing details and low density spray foam insulation, glazing that exceeds ENERGY STAR requirements, and a high performance heating and cooling system. Construction quality and execution was a high priority for TaCStudios and was ensured by a third party review process. Post-construction testing showed that the project met stated goals for envelope performance, an air infiltration rate of 2.15 ACH50. The homeowners wished to further validate whole house energy savings through the project's involvement with Building America and this long-term monitoring effort. As a Building America test home, this homewas evaluated to detail whole house energy use, end use loads, and the efficiency and operation of the ground source heat pump and associated systems. Given that the home includes many non-typical end use loads including a home office, pool, landscape water feature, and other luxury features not accounted for in Building America modeling tools, these end uses were separately monitored todetermine their impact on overall energy consumption.
Original languageAmerican English
Number of pages40
StatePublished - 2013

Bibliographical note

Work performed by Southface Energy Institute as part of the Partnership for Home Innovation (PHI), Upper Marlboro, Maryland

NREL Publication Number

  • NREL/SR-5500-57723

Other Report Number

  • DOE/GO-102013-3889


  • advanced air sealing details
  • Building America
  • geothermal ground source heat pumps (GHP)
  • mixed-humid climate
  • monitoring
  • new construction
  • open-cell spray foam residential
  • residential buildings
  • test house


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