Multifamily Ventilation Retrofit Strategies

Research output: NRELSubcontract Report


In multifamily buildings, central ventilation systems often have poor performance, overventilating some portions of the building (causing excess energy use), while simultaneously underventilating other portions (causing diminished indoor air quality). BSC and Innova Services Corporation performed a series of field tests at a mid-rise test building undergoing a major energy audit and retrofit,which included ventilation system upgrades.
Original languageAmerican English
Number of pages87
StatePublished - 2012

Bibliographical note

Work performed by Building Science Corporation, Somervile, Massachusetts

NREL Publication Number

  • NREL/SR-5500-56253

Other Report Number

  • DOE/GO-102012-3762


  • Building America
  • Building Science Corporation (BSC)
  • compartmentalization
  • duct leakage
  • exhaust ventilation
  • multi-unit residential building (MURB)
  • multifamily
  • residential
  • residential buildings
  • retrofit
  • rooftop exhaust
  • variable speed fans
  • ventilation


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