Ionic pro
This is the second machine I have purchased. The first one ran day and night for years. I have several allergies, including one to mold and mildew. I keep the PurePro running in my home constantly. I have IonicPro minis running in the bedrooms. Since I have been using the machine,my allergies are much better. I am so happy I do not take allergy shots any more, and hardly have to use medication. When I do it is because I have been outdoors during pollen season. I recommend the PurePro to anyone who has allergies, it really makes a difference.