Per the CDC guidelines, we have:
Increased the introduction of outdoor air by:
- Opening outdoor air dampers beyond minimum settings, as high as 100%, reducing or eliminating HVAC air recirculation.
- Keeping HVAC systems running longer
Ensure ventilation systems operate properly and provide acceptable indoor air quality.
- Rebalancing or adjusting HVAC systems to increase total airflow to occupied spaces when possible.
- Disabling demand-controlled ventilation (DCV) controls that reduce air supply based on occupancy or temperature during occupied hours.
Improved central air filtration by:
- Increasing air filtration to the MERV-13 or as high as possible without significantly reducing design airflow.
- Make sure air filters are properly sized and within their recommended service life.
- Inspecting filter housing and racks to ensure appropriate filter fit and minimizing air that flows around, instead of through, the filter.
- Ensuring restroom exhaust fans are functional and operating at full capacity when the building is occupied.
- Increasing overall ventilation in occupied buildings.