6 questions to ask before choosing an air purifier

Picture shows a Molekule Air Mini Plus air purifier sitting on a glass bedside table with a candle, cosmetic bottle, and potted plant to its right.

An air purifier works by sucking in air, passing it though a filter that captures pollutants, and pushing the cleaner air back out into the room. Today's best air purifiers can remove everything from dust particles and pet dander to gases from the air in your home (here's more on what air purifiers can and can't help with).

Different models are suited to different needs and spaces, so it's worth taking a few minutes to figure out exactly what you need before you invest. Here are six questions to ask before buying an air purifier...