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As a matter of public interest, ASHRAE is making available HVAC engineering resources related to control of the spread of respiratory illness.

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Room Pressure for Critical Environments

An HVAC design area that has not yet developed a standard "rule-of-thumb" is the quantitative determination of differential pressure and airflow for "proper" room pressurization. This article investigates current design guidelines and field practices for room pressurization. In particular, the author explores current literature that addresses the definition of "proper" pressurization.

Citation: ASHRAE Journal, vol. 45, no. 2, February 2003