Bought my first Blue Air (Pure 211) because of all the fires in California a few years ago. Both the product and customer service are amazing. I ended up buying two more to cover the rest of my house--and I think it's been a real asset every flu season (and now with covid, I'm especially glad to have something filtering the air in our home--my roommate's a healthcare worker and we've been doing everything we can to cut down on passing germs between us). I can't recommend these products highly enough!