Steps

Flush your facility with clean outside air

• ASHRAE recommends you review HVAC programming to provide flushing two hours before and post occupancies. This includes operating the exhaust fans as well as opening the outside air dampers. For buildings without the capacity to treat large quantities of outside air and when outside air conditions are moderate, open all windows for a minimum of two hours before reoccupation.
  
• Where increasing fresh air intake is not possible or is limited, add gas phase filtration to reduce contaminants.

Inspect and change air filters often

• Inspect: Do my filters seal into their holding frames or tracks? A filter only works when it is sealed properly eliminating bypass.
  
• Replace: Change out your filters every 3 months for optimal filtration.

Upgrade to the optimal filter

Upgrade efficiency to MERV 13 or higher which will capture more pathogens. Adding molecular filtration to your filter system can remove more contaminants along with enhanced antimicrobial properties.

Add localized air purifiers and dehumidifiers

• Consider adding localized, stand-alone air purifiers and dehumidifiers in high-traffic and commonly occupied areas to help prevent the spread of bacteria and virus.

Upgrading your HVAC system to bring in conditioned fresh, outside air

• By upgrading your HVAC system to bring in fresh, conditioned air, you avoid recirculating airborne contaminants.
  
• Maintain proper humidity levels to prohibit virus, bacteria and mold reproduction and function.