I have severe allergies, especially to mold and dust. I was so impressed with the professionalism and honesty of the Sales Rep when she came to demo the air purifier that we decided to purchase one. We turned it on the low setting and ran it through the night. It was the first morning in months I didn’t wake up sneezing and coughing. When I walked into the kitchen that morning the sun was shining through the window and the first thing I noticed was there were no dust particles in the air. We keep the house very clean but I could always see dust in the air every morning through the sunlight. That morning and every morning since our purchases we haven’t seen any dust in the air. No more sneezing or coughing. We are very glad we made the decision to make this purchase. I recommend you see it for yourself. Schedule a demo and see the magic! I love my Rainbow!