Replacement - works great
I had to buy this because one I had of the same model finally gave out after.... I honestly don't know how many years.  It was a lot!  I didn't realize how loud the old one had gotten (still wasn't that bad) until I plugged in the new one.  I could really tell a difference in air quality in that room while I was waiting for the new one.  Note:  This is for a small room.  I would not expect it to clear a large space.
Rating: 5 stars