CADR is clean air delivery rate. It is defined at the rate of clean air provided by the air purifier in a certain time. Every air purifier has Different CADR for different pollutants,for example dust are larger in size then smoke. so CADR to capture dust would be Higher then the smoke.
Air flow is defined as the rate of air rotate by the air purifier over a certain time. It shows the power of fan how faster it observe and throws the air outside.
Note: Since its air which we are measuring so both of them are measured in CFM. Cubic Feet/ Minute. or Cubic Meter/Hour.
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