Classroom ventilation

Classroom ventilation

Last updated on Nov 3, 2021

The table below lists the classrooms where the ventilation has been assessed.

High traffic classrooms are being equipped for six equivalent air changes per hourthe same standard used in healthcare settings, such as patient examinations rooms. Public health guidance from Harvard University indicates that six air changes per hour is considered ideal for classrooms. 98% of our classrooms exceed this ideal ventilation target. Only classrooms that meet this target will be used this fall. The University has focused on classrooms because a larger number of people are coming in and out of classrooms compared to other spaces.  


To learn more about U of T’s approach to classroom ventilation upgrades, read this U of T News story. 

To learn more about ventilation in buildings, which impacts office and generaluse spacesreview our COVID-19 HVAC strategy and central ventilation page.

How to use this table

Select the campus you’re interested in and then filter by building to review the classrooms’ air change rates. You can also search for a specific classroom.

Air change rate means how many times the total air volume of the space has been exchanged for fresh air in an hour. If a room has an air change rate of six or above, no additional air purifier needed to be installed.

If an air purifier is installed, the classroom is equipped with an air purifier to supplement the air flow and achieve the desired air change rate standard.