Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georgia

Stacey Rothgeb, V. Kochkin, R. Stephenson

Research output: NRELFact Sheet


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 to potential 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 TaC Studios 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 homeowner's 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 home was 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 to determine their impact on overall energy consumption.
Original languageAmerican English
Number of pages2
StatePublished - 2014

Bibliographical note

Work performed by National Association of Home Builders (NAHB)

NREL Publication Number

  • NREL/FS-5500-60162

Other Report Number

  • DOE/GO-102014-4075


  • Building America
  • geothermal ground source heat pumps (GHP)
  • GSHP
  • long-term monitoring
  • mixed-humid climate
  • NAHB
  • new construction
  • residential
  • residential buildings
  • test house


Dive into the research topics of 'Building America Case Study: Ground Source Heat Pump Research, TaC Studios Residence, Atlanta, Georgia'. Together they form a unique fingerprint.

Cite this