Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Andrew K. Persily (Fed)

Dr. Andrew Persily has performed research into indoor air quality and ventilation since the late 1970s. His work has included the development and application of measurement techniques to evaluate airflows and indoor air contaminant levels in a variety of building types, including large, mechanically ventilated buildings and single-family dwellings. These evaluation procedures include tracer gas techniques for measuring air change rates and air distribution effectiveness, contaminant concentrations measurements, and envelope airtightness. He has contributed to the development and application of multi-zone airflow and contaminant dispersal models.

Dr. Persily was a vice-president of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) from 2007 to 2009, and is past chair of ASHRAE SSPC 62.1, responsible for the revision of the ASHRAE Ventilation Standard 62. He is currently chair of Standard 189.1, Design of High-Performance Green Buildings. He is a past chair of ASTM Subcommittee E6.41 on Air Leakage and Ventilation Performance and past vice-chair of subcommittee D22.05 on Indoor Air Quality. He was named an ASTM Fellow and an ISIAQ Fellow in 2002, and an ASHRAE Fellow in 2004.


Indoor Carbon Dioxide Metric Analysis Tool

Andrew K. Persily, Brian Polidoro
Indoor carbon dioxide (CO2) concentrations have been used for decades to evaluate indoor air quality (IAQ) and ventilation, and more recently in discussions of

Evaluating Ventilation Performance

Andrew K. Persily
The evaluation of building ventilation performance is critical to understanding indoor contaminant transport dynamics and interpreting indoor contaminant
Created October 9, 2019, Updated July 28, 2022