It did reasonably well in our testing, removing 95.2% of the smoke on high and 89.7% on medium. But our top picks from Coway, Winix, and Blueair performed far better. And the need to frequently wash the plates—and, once a year, take the whole machine apart and give it a deep clean—sounds like a hassle… Continue reading Levoit’s True HEPA Filter Air Purifier Is ‘Whisper Quiet’ and on Sale