What CADR is required for a 2400 cubic foot room to achieve 5 air changes per hour?
Answer
200 CFM
To calculate the required Clean Air Delivery Rate (CADR), multiply the room volume by the desired number of air changes per hour (ACH) and divide by 60 minutes. For a 2400 cubic foot room aiming for 5 ACH, the calculation is 2400 multiplied by 5, equaling 12,000 cubic feet of air processed per hour. Dividing 12,000 by 60 minutes results in a requirement of 200 cubic feet per minute (CFM). Understanding this calculation is vital, as it allows users to determine if a specific unit can actually process the air in their space rapidly enough to be effective.
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