Portable Air Cleaner Sizing Tool
The Portable Air Cleaner Sizing tool (PACS) can help you select an appropriately-sized portable air cleaner for indoor spaces. Input your “clean air” target and information about the size of the room. The calculator returns the “clean air delivery rate” (CADR) to look for from an air cleaner. Or, input the CADR of a portable air cleaner, and the calculator will returns the maximum room size it can handle.
Determine the air cleaner(s) required in a room to reach a target equivalent air exchange rate (eACH).
Click to select this type
Find the largest room acceptable for a given clean air delivery rate (CADR), to reach a target equivalent air exchange rate (eACH).
Click to select this type
Note: Find the CADR from the air cleaner manufacturer in cubic feet per minute, or CFM. If multiple numbers are listed, use the one for “dust”. Note: Find the CADR from the air cleaner manufacturer in cubic meters per hour, or m3/hr. If multiple numbers are listed, use the one for “dust”.
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Ideal (6 ACH) |  |
Excellent (5-6 ACH) |  |
Good (4-5 ACH) |  |
Minimum (3-4 ACH) |  |
Low (< 3 ACH) |
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Ideal (6 ACH) | |
Excellent (5-6 ACH) | |
Good (4-5 ACH) |
|
Minimum (3-4 ACH) | |
Low (< 3 ACH) |
Configure the settings and then click the button below to calculate.
Calculating…
| Total Target CADR: | 0 |
| CADR from Room Ventilation: | 0 |
To meet the target eACH:
CADR Required from Air Cleaner(s) Maximum Room Size for this Air Cleaner 0The ventilation of the room is 1 ACH higher than the target eACH level without any additional air cleaners.
The height of this room may not be appropriate for human habitation.
Important: Portable air cleaning is only one method for reducing airborne particles indoors, including those that may contain infectious viruses or bacteria, or those from outdoor/indoor pollution. For more info on portable air cleaners, please review our report on PACs for infectious disease reduction or our wildfire advisory.