4.1 Latest Update of HVAC Air Cleaner Testing

This talk is a work in progress. It will be an update on the recommendations for the ETF for using filtration to battle COVID19 and on filter test methods. Thus, the content will change based on what happens between now and then. Likely discussion will be any changes in recommendations for MERV levels or to air changes including the balance between ventilation with outdoor air and use of clean/filtered air. As appropriate, this talk may include discussion of schools, building reopenings, and other ETF topics related to filtration.