I'm selling a year-old Coway Mighty Air Purifier in excellent condition. I'm moving cross-country and can't take it with me. I've been using it in a 400-square-foot space to great effect.

More information: https://www.cowaymega.com/product/coway-mighty-ap-1512hh/

https://thewirecutter.com/reviews/best-air-purifier/