Along with masking, gathering outdoors when possible, staying home when you’re sick and reducing contacts, air purifiers can add another layer of protection indoors.
When indoor air quality expert Jeffrey Siegel has a few select family members over for dinner these days there are a couple of extra guests in the room.
While the virus itself is super tiny, “it would always be associated with small droplets and aerosols that are emitted as people talk and sing and shout and those droplets don’t get down to below a micron,” he explains. These droplets and aerosols can be captured by the unit and filtered out.There are a number of different air purifiers and air cleaners on the market, but to help with COVID-19 they need to have a filter.
“For a smallish room, you want [a CADR] of 200 or bigger. And by the time you get to a big room, you want something that’s maybe more like 400 or 500.” You can find the room size a filter is designed to treat on the box or packaging for the purifier. For example, if you’re thinking of adding an air purifier with a filter for your regular household use, this can help with general air quality, but probably won’t do too much to reduce your risk of COVID on a daily basis, says Siegel. “You have a lot of close contact with the other people in your house. The chance of that filter changing that risk that much isn’t that great,” he explains.
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