Delhi-NCR’s rising air pollution has pushed many homes to rely on air purifiers. A pulmonologist explains how to use them safely, from choosing HEPA filters to ideal humidity, placement, and ...

Health experts also reveal how air purifiers work to prevent illness and where you should put them in your home.

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 ...