TRACS Air Changes by Room Size
Square
feet of room* |
Air changes
per hour created** |
80 ft2 |
23 ACH |
100 ft2 |
19 ACH |
200 ft2 |
9 ACH |
300 ft2 |
6 ACH |
400 ft2 |
5 ACH |
600 ft2 |
3 ACH |
800 ft2 |
2 ACH |
1,000 ft2 |
1.875 ACH |
1,500 ft2 |
1.25 ACH |
* 8 ft. ceilings assumed
** Air Changes Per Hour: Term used to measure room airflow (ventilation) rates. ACH is a measure of the rate (time) it takes to clean/remove all of the air in the room, and replace it with clean/fresh air. For example, if 9 ACH are created in a room, then all of the air in the room will be cleaned 9 times per hour. Industry standards recommend a minimum of 3 ACH to achieve a satisfactory reduction in indoor air contamination.