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Using CO2 Monitoring to Manage Ventilation in Buildings



Andrew K. Persily


The measurement of indoor carbon dioxide concentrations has been used for many years to assess and control building ventilation rates, as well as to characterize indoor air quality. Over the years these applications of indoor CO2 monitoring have been misunderstood, despite the publication of technical papers and guidance documents and the organization of conference sessions in an attempt to reduce some of the confusion. There is renewed interest in such applications of CO2 measurement in the context of airborne infectious disease control. This presentation will review the application of indoor CO2 monitoring to building ventilation and IAQ, and discuss several issues regarding these measurements and their interpretation.


Persily, A. (2021), Using CO2 Monitoring to Manage Ventilation in Buildings, [online], (Accessed June 16, 2024)


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Created November 18, 2021, Updated November 29, 2022