Everything an Air Purifier Can and Can't Do

Everything an Air Purifier Can and Can't Do Gadgets

Air purifiers are not complicated machines: Fundamentally, they’re just a dense filter and a fan that draws air through it. But there’s a fair amount of confusion about what they can remove from the air—and, just as important, what they can’t.

UPDATE: It turns out we spoke too soon in our assessment of HEPA filters’ effectiveness in capturing airborne bacteria and viruses. In fact, a HEPA filter can capture close to 100% of bacteria in the air, as well as a smaller percentage of viruses. Many hospitals actually use HEPA filters to reduce the amount of bacteria and other pathogens in the air.

If there’s something you’re wondering about whether an air purifier can filter, leave your question in the comments!

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Our reviews of the best air purifiers: https://wrctr.co/2FWZM9M

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