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Since I first started reviewing air purifiers for WIRED in 2018, I’ve tested dozens and dozens of the health-protecting appliances, usually for months at a time. I started out looking into how to improve the air quality in my apartment, and now I write about good air hygiene and test air quality monitors year-round in addition to purifiers.

Because I test them in my real life , I've used air purifiers in small rooms, big rooms, classrooms, an urban apartment, and a cabin in the country. I've used them on bad air days, good air days, and in locations with pets, children, and lack of pr

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