Calculate the Air Change Rate of Your Portable Air Cleaner

If you already have a PAC in a dental treatment room, and you want to know what number of equivalent ACH it adds to the room, follow the steps below:

1. Measure the length, width, and height of the dental treatment room
2. Input the height, length, width of the room in this calculator
3. Obtain the CADR rating for tobacco smoke (usually on the box of the PAC)
4. Input the CADR rating of your PAC
5. Click the “Calculate” button, the number you get is ACHpac, or the number of equivalent ACH added to your room by your PAC.

Measurement System :

Imperial

Metric

Room Dimensions

Length (in feet) :

Width (in feet) :

Height (in feet) :

Portable Air Cleaner

CADR (in ft³/min) of your Portable Air Cleaner:

ACH_pac (per hour) :

Your portable air cleaner could deliver an equivalent of ACH_pac in a room with the dimension you entered. Change any inputs and click the "Calculate ACH" button to try again.