My 7 years old boy is asmhatic and this product is amazing for him. I placed on my son room during the night and he can sleeps better now. No mire coughing. My son asthma was so bad that he was having to used rescue inhaler at least once a day. I knew that I needed to do something to help him, so this air purifier is a blessing. This is the best air purifier that I have ever owned, and I could not be happier with it. The allergen setting is VERY quiet. The turbo setting is awesome, and takes out odors very quickly. I have been running it at the allergen setting, and have not had a single complaint. I have had it for a week, and son asthma has already improved.