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Discussing COVID-19 ASHRAE Recommendations for HVAC Systems

By Scott M. Katzer, P.E., CFEI ASHRAE has developed proactive guidance to help address coronavirus disease (COVID-19) with respect to the operation and maintenance of heating, ventilating and air-conditioning (HVAC) systems1 and has established an epidemic task force to respond to the global COVID-19 pandemic2. ASHRAE released a position document (PD) titled “ASHRAE Position Document on Airborne Infectious Diseases.”3 This document primarily discusses airborne infectious diseases in healthcare facilities and “does not provide specific requirements… Read More

Discussing COVID-19 CDC Guidelines for HVAC Systems

By Scott M. Katzer, P.E., CFEI COVID-19 CDC guidelines relating to modifying HVAC systems state as follows1: Consider improving the engineering controls using the building ventilation system. This may include some or all of the following activities: Increase ventilation rates. Increase the percentage of outdoor air that circulates into the system. These recommendations do not appear to consider the building’s climate location as outdoor moisture quantities are different, particularly in warmer climates. Increasing building ventilation… Read More
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