Login
ASHRAE’s 2022 publication of a new position document on indoor carbon dioxide (CO2) has been a significant contribution to ongoing discussions of how indoor CO2 can be used to understand ventilation and indoor air quality (IAQ). The position document clarifies what is known about the relationship between CO2 concentrations and ventilation rates, the effects of CO2 on building occupants, and how CO2 concentrations relate to airborne infectious disease transmission. While the position document is a key step to addressing ongoing debate and
occasional misunderstanding about indoor CO2, this summary speaks to additional efforts that are needed to further resolve these matters and advance the application of indoor CO2 measurements and analyses in understanding and characterizing IAQ. This paper proposes a number of follow-up activities and research topics that should be addressed, which can then be considered in the next version of the position document and help to advance the application of indoor CO2 measurements and analyses.