Evaluation of the Performance of Houses With and Without Supplemental Dehumidification in a Hot-Humid Climate

Research output: NRELSubcontract Report


This report, Evaluation of the Performance of Houses with and without Supplemental Dehumidification in a Hot-Humid Climate, describes a research study that that was conducted by the Building Science Corporation (BSC) Building America Research Team. BSC seeks to research and report on the field monitoring of the performance of in-situ supplemental dehumidification systems in low energy, high performance, homes in a Hot-Humid climate. The purpose of this research project was to observe and compare the humidity control performance of new, single family, low energy, and high performance, homes. Specifically, the study sought to compare the interior conditions and mechanical systems operation between two distinct groups of houses, homes with a supplemental dehumidifier installed in addition to HVAC system, and homes without any supplemental dehumidification. The subjects of the study were ten single-family new construction homes in New Orleans, LA.Data logging equipment was installed at each home in 2012. Interior conditions and various end-use loads were monitored for one year. In terms of averages, the homes with dehumidifiers are limiting elevated levels of humidity in the living space. However, there was significant variation in humidity control between individual houses. An analysis of the equipment operation did not show a clear correlation between energy use and humidity levels. In general, no single explanatory variable appears to provide a consistent understanding of the humidity control in each house. Indoor humidity is likely due to all of the factors we have examined, and the specifics of how they are used by each occupant.
Original languageAmerican English
Number of pages96
StatePublished - 2014

Bibliographical note

Work performed by Building Science Corporation, Westford, Massachusetts and Mountain Energy Partnership, Longmont, Colorado

NREL Publication Number

  • NREL/SR-5500-62531

Other Report Number

  • DOE/GO-102014-4480


  • BSC
  • Building America
  • datalogging
  • energy use measurements
  • hot-humid
  • humidity control
  • interior conditions
  • monitoring
  • new construction
  • New Orleans
  • relative humidity measurements
  • residential
  • residential buildings
  • single family houses
  • stand alone dehumidifier
  • supplemental dehumidification
  • temperature measurements
  • whole house dehumidifier


Dive into the research topics of 'Evaluation of the Performance of Houses With and Without Supplemental Dehumidification in a Hot-Humid Climate'. Together they form a unique fingerprint.

Cite this