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The best air purifier for 2024
The best way to improve the air quality in your house is by letting in fresh air; when you can't open a window, these air purifiers we tested are the next best thing.
The Core 400S claims a half-hour air exchange rate for a 1,000-square-foot room and combines the three main filter types — pre-filter, activated carbon and HEPA — into a single ring. Pros Easy on-board controls Reliably improved the air quality in our tests Inexpensive replacement filters High speed is powerful, but not overly loud I was indifferent to the looks, but appreciated the slick and informative app, which not only displays indoor air quality, it also shows what conditions are like outside, using a clever house graphic to differentiate the two sets of numbers.
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