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Promising review: "I had an old purifier (not a Levoit) that wasn't doing the job. A thin layer of dust continually appeared on everything — my computer keyboard, reading glasses, desk and table surfaces, and most everthing else. I received the Levoit unit and quickly went through the instructions and set it up. Very easy and direct. I set it for automatic operation. It immediatly went on full cleaning mode and stayed there for a time. It then came on periodically in response to the built-in air-quality sensor, quietly at work while I was about my daily life and while I slept. The result? No tangible traces of dust, a nice air quality, and no effort on my part. It's gorgeous, effective, and an exceptional value." — AC

Price: $99.99 (originally $249.99; currently only available in the black color) — and shop all the Levoit deals here.

www.amazon.com

BuzzFeed Shopping editor Melanie Aman says, "This was my Prime Day 2020 purchase, and I love it! I had been waking up with watery eyes and the sniffles and desperately wanted some relief. I joked to my partner that this bad boy looked like an iPod shuffle...but its air-filtering capabilities are no laughing matter! Now, I wake up feeling refreshed instead of congested. Plus, I really feel like this air filter is able to detect changes in the air. Case in point: when I made fish a room away, the LED turned from blue (indicating good air quality) to red (indicating poor air quality), and the purifier jumped into action."