Blueair DustMagnet 5440i review: This powerful purifier can double as an end table

Unique airflow design—and dependable performance—set this purifier apart.
dustmagnet 5440i in a bedroom

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Christopher Null is a veteran technology and business journalist. He contributes regularly to TechHive, PCWorld, and Wired, and operates the websites Drinkhacker and Film Racket. Disclosure: He also writes for Hewlett-Packad's marketing website TechBeacon.