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WHAT IS CADR AND WHY IS IT IMPORTANT?
The Clean Air Delivery Rate (CADR) is a measure of the reduction rate (cleaning
speed) of specific particulates by an air purifier or other filtration system in a con-
trolled environment. A higher CADR means that the air purifier cleans the air more
quickly than a unit with lower CADR. CADR is the one performance measure that
air volume processed by the air purifier. CADR is usually measured for three particle
types: smoke, dust, and pollen. According to the Asso ciation of Home Appliance
Manufacturers (AHAM) Room Air Cleaner Certification Program, the recommended
room size is directly related to the smoke CADR.
Look for the AHAM mark on the front of the package and the CADR rating label
elsewhere on the package. The CADR rating label will list the CADR rating for
tobacco smoke, dust, and pollen, and it will also list the recommended room size
per the AHAM certification.
