And right now, some of our favorite models are seeing steep discounts for Amazon Prime Day, which ends July 11. Check out our air purifiers for asthma roundup and best smart air purifier roundup for expert recommendations—but don’t wait to hit “Buy” if you want to breath easy. Blueair just released its flagship Blue Signature, and this new favorite is already getting a rare 20% discount—it’s just $349.99 for Prime Day. It’s in our best air purifiers roundup and our guide to smoke-fighting air purifiers for a reason—it works, and it’s quite quiet while doing it. More Blueair air purifier dealsOther air purifier deals