Tune-Up Your Fan Systems for Improved Performance

Michael Deru, Grant Wheeler, Anoop Honnekeri

Research output: NRELFact Sheet


Fans are used extensively in commercial buildings and represent approximately 6% of total energy consumed by commercial buildings. The U.S. Department of Energy (DOE) estimates that fans in commercial buildings consume 158 billion kWh of electricity annually. Maintaining fan systems in proper condition provides energy savings and ensures a comfortable and healthy environment. While many fan systems have significant energy savings opportunities available through improvements in fan selection, system design, and operational practices, it is not always apparent when a fan system needs maintenance or what opportunities are available for improvements. This resource is designed for facility managers and maintenance staff to provide easy-to-implement actionable guidance on fan efficiency measures for existing ducted air systems.
Original languageAmerican English
Number of pages7
StatePublished - 2018

NREL Publication Number

  • NREL/FS-5500-70566


  • commercial buildings
  • ducted air systems
  • facility managers
  • fans
  • HVAC
  • tune-up


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