East Bay Getting to Zero
COVID, Prevention

You can improve indoor air quality and reduce the risk of getting sick from respiratory viruses by optimizing ventilation where-ever you are:

  • Having as many activities outdoors as possible, especially while eating, drinking, singing, shouting and exercising.
  • In indoor spaces by:
    • keeping windows and doors open for indoor/outdoor air exchange.
    • running fans to increase air flow at windows and doors, pointing away from the group.
    • running HVAC systems with MERV 13+ filters to clean the air.
    • running HEPA air purifiers at the maximum rate tolerable starting at least an hour before gathering, during the gathering and at least an hour after to clean the air. Here’s a DIY HEPA air filter design for a lower cost ($60-80) option.
  • If the outdoor air quality is poor and you can’t keep windows and doors open, run the HVAC system and air purifiers at the highest settings tolerable.
  • Check out these ventilation tools to see how virus particle levels change when you use different interventions, such as opening windows and using air filters or HVAC systems.