Air Change Calculator

Determining the Number of Abatement HEPA-CARE Units Needed

Room dimensions (in feet):

long x wide x high (to drop ceiling)
-or-
cubic feet

Select the number of air changes per hour (ACH) you would like to have for the room:

Select... 6 7.5 9 12 15 18 24 30

Select a safety margin that compensates for airflow losses such as duct leakage, filter loading, etc:
(The safety margin will be used in the calculations to determine the net ACH of the room)

Select... 25% 50% 75% 100%

Select the HEPA-CARE model or the peak airflow rate needed for the room in cubic feet per hour:

(show calculations for all models) HC400C SERIES, 19,500 CFH HC400C-PP SERIES, 19,500 CFH HC400F SERIES, 24,000 CFH HC400F-UV SERIES, 24,000 CFH HC800C SERIES, 42,000 CFH
HC800F SERIES, 42,000 CFH