 The Blueair Air Purifier series combines health, function and style. Made from galvanized plastic, blueair machines have 10 years limited warranty.
The Association of Home Appliance Manufacturers (AHAM) rate the Blueaire air purifier with the highest clean air delivery rate ( CADR) compared to other air purifiers it tested
(NOTE: Not all machines featured in this site are tested e.g IQAir wasn't tested for comparison by AHAM) A highly efficient unit, but it's relatively expensive (high upfront price, costly filters).
 
Blueair 601
RATING: 
  Combines HEPA and ionization as filtration method.
Steel construction.
A quiet machine with it's HEPASilent technology.
3 fan speeds.
Read full review 
AREA : up to 679 sq ft
Blueair 501
RATING:
 Same spec as above but for smaller area.
4 fan speeds.
Read full review AREA : up to 550 sq ft
Blueair 402
RATING:
As above but for smaller area.
4 fan speeds.
Read full review
AREA : up to 365 sq ft
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AIR PURIFIER FAQ