How do I know which air
cleaners are really effective?
The Clean Air Delivery Rate (CADR) is the standard by which portable room
air cleaners are evaluated. You will generally see CADRs expressed for the
three most common types of pollutants: TOBACCO SMOKE, DUST and POLLEN.
CADR refers to the amount of clean air provided by an air cleaner each
minute of operation, measured in cubic feet. The
C-90A specs are
here. The new and improved C-90A, re-designated the
C-90B specs are
here. Read more about CADR
and AHAM certification here.