Research challenges and directions in HVAC fault prevalence

Janghyun Kim, Kim Trenbath, Jessica Granderson, Yimin Chen, Eliot Crowe, Hayden Reeve, Sarah Newman, Paul Ehrlich

Research output: Contribution to journalArticlepeer-review

10 Scopus Citations


This study provides a review of the current state of knowledge, gaps, and potential value in research on the prevalence of faults in commercial buildings. Two separate efforts were made in this study: (1) we performed a literature review to determine the extent of currently available fault prevalence data for heating, ventilation, and air-conditioning (HVAC) systems, and (2) we conducted dozens of interviews with subject matter experts and stakeholders to determine the HVAC fault data that would be of greatest value. Through the literature review and interviews, we discovered unmet needs for empirical data on the prevalence of faults at the desired level of granularity, consistency, and scale; this lack of data leads us to recommend future work studying commercial buildings’ HVAC fault prevalence, with robust fault taxonomy and a variety of meaningful fault prevalence metrics.
Original languageEnglish
Pages (from-to)624-640
Number of pages17
JournalScience and Technology for the Built Environment
Issue number5
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© Copyright © 2021 ASHRAE.

NREL Publication Number

  • NREL/JA-5500-75495


  • AFDD
  • fault incidence
  • fault prevalence
  • interview
  • literature review


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