The well-known magazine, Consumer Reports, periodically rates air purifiers based on several factors.  Consumer Reports feel these are the most important criteria to look at when rating different air purifiers.

In Consumer Reports latest ranking of air purifiers, the following criteria were evaluated:

Air purifiers ranked highly by Consumer Reports include the Friedrich C-90A and the Bionaire BAP1300.  Both had overall scores in the good to very good range.

Although there are some experts who would like to see additional criteria added, this list will get most consumers started in the right direction.  Other factors that need to be considered when selecting an air purifier include warranty, money-back guarantee offers, and how the machine will look in your home or office.

Generally, Consumer Reports rates and reviews 30-40 air purifiers every 12-18 months.  The magazine tends to be a highly respected source of information for all types of products.