I had such a problem with moisture in my home, windows steaming up, moisture in the cellar and leaving an odor in the house. Knew I had to do something. That when I discovered Fresh Air Ventilation Systems. I call Kurt, and not knowing anything about the system, he explained in detail and assured me it would take care of my problem. Well I have to say, not only did it take care of the problem, it also helps withany kind of pollution, animal dander, dust, allergies. Cannot say enough good about the system. I now have fresh air in all of my rooms, including the cellar. My home was an older home, but if you are building a new home, it would be a perfect time to have one installed as well.