Impact of Residential Mechanical Ventilation on Energy Cost and Humidity Control

Eric Martin, Stacey Rothgeb (NREL Technical Monitor)

Research output: NRELSubcontract Report


The DOE Building America program has been conducting research leading to cost effective high performance homes since the early 1990's. Optimizing whole house mechanical ventilation as part of the program's systems engineered approach to constructing housing has been an important subject of the program's research. Ventilation in residential buildings is one component of an effective, comprehensive strategy for creation and maintenance of a comfortable and healthy indoor air environment. The study described in this white paper is based on building energy modeling with an important focus on the indoor humidity impacts of ventilation. The modeling tools used were EnergyPlus version 7.1 (E+) and EnergyGauge USA (EGUSA). Twelve U.S. cities and five climate zones were represented. A total of 864 simulations (2*2*3*3*12= 864) were run using two building archetypes, two building leakage rates, two building orientations, three ventilation systems, three ventilation rates, and twelve climates.
Original languageAmerican English
Number of pages47
StatePublished - 2014

Bibliographical note

Work performed by Building Science Corporation, Florida Solar Energy Center/BA-PIRC, IBACOS, Cocoa, Florida

NREL Publication Number

  • NREL/SR-5500-60675

Other Report Number

  • DOE/GO-102014-4290


  • Building America
  • dehumidification
  • energy modeling
  • humidity control
  • infiltration
  • mechanical ventilation
  • residential
  • residential buildings


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