We have been in regular contact with Facilities Services at McMaster, and they are doing or have already done the following as part of McMaster’s ventilation plan for teaching and non-teaching spaces.
1. Increase outside air/fresh air in all our main air handling systems as the system design and outdoor temperature permits
2. Replaced all return air filters with MERV 13 filters
3. Inspected and verified that air dampers in air handling systems are operating as per design.