I am so happy with my PureZone 3-in-1 True HEPA Air Purifier. I have allergies and sneeze a lot.This product has stopped the sneezing I am very happy to say.All you have to do is take the plastic off of the filter and it is ready to go.The air smells so much better in the house.It is also great for taking odors out of the kitchen after cooking.I love that it has 3 fan settings.It lets you know when to change the filter.Another big plus is I am not dusting as often as I was as it eliminates 99.97% particles out of the air as small as 0.3. I move this all over the house it works best with a 200 sq ft room.It also comes with a 5 year warranty.The only Con is it does dry out my nose and I have a dry throat in the morning if I keep my door closed. I leave my door half open it does not do this.