We also discuss the much-hyped IKEA Förnuftig.Īmong our picks, we have two exceptions to this general rule: the Blue Pure 211+, our pick for large spaces, and the Blue Pure 311 Auto, an also-great pick for standard-size rooms.

In a new section, we cover a few other purifiers that fit specific needs, including a purifier for handling VOCs, a super-energy-efficient small-space purifier, and a truly smart air purifier. And it doesn’t keep pace with the Mighty or the Blue Pure 211+ in larger rooms. But it’s not terribly energy efficient: Running it 24/7 on medium consumes about $300 of electricity over five years, and seven new filters in that period cost $180, making this model slightly more expensive than the Coway Mighty over the long term. At around $100 to purchase, it’s also the cheapest up front of all our picks. It’s attractive and compact, measuring just 14½ inches tall and 8½ inches in diameter, and its display-shutoff feature means it won’t interrupt sleep with bright lights. On medium, it reduced them by more than 92%. It was impressive in our tests, reducing particulates by more than 97% on its high setting in 30 minutes in a 135-square-foot New York City office. If you need to clean the air in a space of around 200 square feet, the Levoit Core 300 is a solid and inexpensive purifier.

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