My wife and I are totally satisfied with our Alen BreatheSmart True HEPA Air Purifier. While it has cut down somewhat on the dusting, the biggest surprise is how fresh and pure the air is. Before when you looked at dust particles in the sunlight the amount of particles was disturbing. Now when you look it’s hard to see them. My allergies and asthma improvement has been substantial. We highly recommend this product. Now if we could get rid of our 110 lb. Golden Retriever the dust would be further eliminated. However, the dog is family:)