Air Quality

The Winix U450 is a large-room air purifier that has a HEPA filter and an energy-efficient design. This air cleaner comes with several convenient features, including an auto mode and a remote control.

The Vornado AC550 is a small-room air purifier that uses charcoal pre-filters, HEPA filters and a fan to purify indoor air, and it does not produce any ozone or charged ions in the process.

Review The Whirlpool Whispure AP51030K is a powerful air purifier best suited to larger rooms and offices.

Editor's Note: This review has been removed from our side-by-side comparison because it no longer ranks as a top 10 product. The original review is below, but check out our current top 10 about Air Purifiers here.