Reply to Building on ACPS Virtual Thread--what will the fall be like? Best guesses?

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[quote=Anonymous]It is understandable that in old buildings that have historically been plagued with mold that letting in too much moisture and unfiltered air will likely exacerbate mold. But why make it a district wide policy since there are some brand-new buildings that won't have that issue.

And since many classrooms don't have windows, why not add a portable HEPA air purifier for each classroom regardless of the age of the building or HVAC system? It could only enhance flushing out/turning over the air in a classroom (ASHRAE recommends 4-6 times per hour). See DCPS:

From: http://dcpsreopenstrong.com/wp-content/uploads/2020/10/10222020_DCPS_HVAC-Enhancements_5-Ws_CommsReview.pdf

"HVAC enhancements are designed to increase the air change rates and filtration. The work varies by system and includes modifications like increasing fresh air distribution through an existing Dedicated Outside Air System (DOAS) and installation of MERV-13/MERV-14 filters or placement High-Efficiency Particulate Air (HEPA) filters in high traffic areas and instructional spaces. In addition, no matter the
system, all classrooms across the DCPS portfolio will receive a portable HEPA filter. "

"All schools will receive indoor air quality (IAQ) sensors that monitor, in real time, particulate matter, temperature, carbon dioxide, volatile organic compounds, ozone, and carbon dioxide levels for measurement and verification purposes. While there is no air quality check for COVID-19, these monitors will help ensure that our systems are working properly and give us important information to help identify solutions if modifications are required."[/quote]

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