My wife has suffered with asthma and allergies for the last decade. We like many others tried various treatments including over the counter drugs which helped to some extent. When your equipment arrived I immediately assembled it and placed it in our bedroom. That night was the first full sleep she had experienced since the allergy season began here in Florida. We have continued to use each night with enormous success. I can't begin to thank you for your well engineered product and would recommend it to others who need clean air.