Fan Energy Index Resources

New fan-efficiency metrics developed by AMCA International—fan energy index (FEI) and fan electrical power (FEP)—can be used to right-size fans and reduce power consumption in commercial and industrial air systems. This Web page provides direct links to resources on applying FEI and FEP.


NEW! Check out the AMCA Advocacy Brief

Click here to visit / download this exciting new document

Supporting the transition to FEI from FEG

• Model energy codes and standards • USA state energy codes • Metric version under development


  • ANSI/AMCA Standard 208, Calculating Fan Energy Index (FREE for 2019)
  • ANSI/AMCA Standard 207, Fan System Efficiency and Fan System Input Power Calculation (for purchase).
  • AMCA Publication 211, Certified Ratings Program Product Rating Manual for Fan Air Performance (no cost)
  • Fan Energy Regulations & Impact on Fan Selection, 2018 Air System Engineering and Technology (ASET) Conference–US, San Antonio, Texas
  • Air System Motor, Drives—Sizing and Selection, 2018 Air System Engineering and Technology (ASET) Conference–US, San Antonio, Texas

    • ANSI/ASHRAE/IES 90.1:Addendum ao to ANSI/ASHRAE/IES 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, which contains FEI requirements proposed for Standard 90.1, is nearing completion and is expected to be considered for publication by ASHRAE in June.

    • International Energy Conservation Code (IECC):

      Based on ASHRAE 90.1 Addendum ao, proposals to replace FEG language with FEI language were submitted by ASHRAE (CE139) and AMCA (CE137 and CE138) to the International Code Council for the next edition of the IECC for consideration at the screening committee hearings in Albuquerque in May 2019. AMCA will withdraw its proposals to support ASHRAE’s. Note: all FEI-related proposals can be found on PDF pages 1338—1346 of the Committee Action Hearing monograph posted on the ICC website HERE. (note: this is a link to a 77 Mb PDF file)

    California Title 20 is part of the Appliance Efficiency Regulation and California Code of Regulations. It is administered by the California Energy Commission (CEC). The CEC initiated a Title 20 rulemaking for commercial and industrial fans and blowers in 2017. The public docket has all documents published by the CEC relating to the regulation, and all comments, proposals, and supplemental materials posted by stakeholders.

    • U.S. Department of Energy
      In 2011, the U.S. Department of Energy began a rulemaking process with the intent to develop test/labeling and energy-efficiency standards for commercial and industrial fans, an initiative that was put on hold in 2017. Useful materials from the initiative are the Appliance Standards and Rulemaking Federal Advisory Committee Term Sheet, which documents consensus-voted recommendations toward development of regulations, and the third Notice of Data Availability, a provisional analysis of economic impacts and energy savings that could result from promulgating a regulatory energy-conservation standard for commercial and industrial fans and blowers.

    • The Appliance and Equipment Standards Rulemakings and Notices page for commercial and industrial fans and blowers can be found here.

      The ASRAC term sheet can be found here.

    • The public docket, which includes all published material and comments from stakeholders, can be found here.
  • Revolutionary Method of Saving Energy for Commercial and Industrial Fan Systems—Presented at the 2017 ACEEE Summer Study for Industrial Energy Efficiency, Denver, Colorado. August 15-18, 2017:

    Paper Presentation

  • New Efficiency Metric for Fans Enables New Approaches for Efficiency Regulations and Incentives. — Presented at the 9th International Conference on Energy Efficiency In Domestic Appliances And Lighting (EEDAL), Irvine, California, September 13-15, 2017.


  • Two New Metrics for Fan System Efficiency: Fan Energy Index and Fan Electrical Power—Presented at Energy Efficiency in Motor Driven Systems (EEMODS'17), Rome, Italy., September 6-8, 2017.