Blueair 603 HepaSilent Air-Purification System

Bought this for my hubby who really doesn't like the noise of air cleaners. However, he now has COPD, and he's now willing to have an air cleaner in the living room. As everyone says, on the first 2 speeds you can barely hear it. We actually use it on the 3rd speed. You can hear it, but it's still a very mild hummm and doesn't interfere with the TV. It's helped my hubby's cough a lot. I have other air cleaners, and this one is definitely remarkably quiet in comparison. I bought the open box one and got a heck of a deal.

This was a really expensive purchase for us, but we felt we really needed it. We just moved and found out that the previous owners had multiple pets. We didn't notice how bad it was till after we moved in and I suffered several asthma attacks in our bedroom. We found pet hair, dander and urine in the carpets and had to rip out some of them. I put this purifier in our bedroom and it seems to be helping quite a bit.

We also painted the kitchen and closets and stuck it in there over night to clear out the smells. You absolutely couldn't smell a thing the next day!

Bought the smaller bluair for our new grandaughters room in Denver- slight difference in the perception of the cleanliness of the air in the room, but the most noticeable difference was the lack of ANY dust accumulation on any of the surfaces in the room for months at a time.
We live in the forest at 9000 feet elevation in the Rockies, so there is not much pollution here- but my better half despises dusting the house, so I bought the big unit to see if it would help with dusting at home. Now I will be purchasing two more units for the other two floors of our house.
Noisy on high speeds, but we run ours 24/7 on low speed and it does the job.