Review Content Clean air Quiet on low setting Does a great job cleaning air. I have a dog with allergies and it seems to be working well. Much less dust. Awesome!!!!! We use it to clean the air in our basement, it gets alit stale. With this purifier it keeps it nice and fresh.... works great! Bought this because we have 3 dogs, even after cleaning everyday it would still smell like dog in our house. Saw that this was one of the few that was highly recommended for dog odors-and it works wonders!!! Happy to have "fresh" air in my home I am battling cancer. Trying to cleanse every part of my body--filtered air is vital for me. Ok wish it had a display panel or someth Its ok. Wish there was some sort of indication that shows its collecting dirt or how long I should keep it running in one room. I just turn it on and go by faith that its doing something. I still dont understand how you can leave a filter there for 5 years and not clean it, you just replace it and buy a new one. So where does all the dirt go for 5 years? Just confused on how this technology works. But nevertheless I leave it running in my house which has been built in 1937 and prob has extensive stuff in the air. I leave it running in each room every night hoping it clears up the air. So far no problem and running fine so I really cant complain. Just wish there was more info on this and not me just going by faith its clearing my air.