Yale School of Public Health: Ventilation Key to Reducing Risk

 

Ways to improve school ventilation

• increase the amount of outdoor air introduced into the building
• improve the filtration of recirculated air
• increase the volume of air exchange per hour
• use supplemental devices such as portable air cleaners and window-mounted box fans. For maximum efficiency, box fans should be pointed outwards, drawing inside air outdoors.

https://publichealth.yale.edu/research/covid-19/schools/ventilation/