General Info Located in Tucson, Ariz., Fresh Air Systems is a wholesale supplier of air cleaning and purifying equipment. It offers an array of products, including UVC germicidal emitters which kill mold, flu and cold viruses. Fresh Air Systems provides air purifiers and central air purifier to remove particles from fresh air stream. It offers commercial and residential services as well as services to make HVAC (heating, ventilation and air conditioning) system function efficiently. It has been associated with the National Air Duct Cleaners Association for over 20 years.