I had bought this same brand last year w/ the double tanks. It was great! I wound up giving it to my daughter for her home since she had a pellet stove and a newborn baby girl. In winter the home is very dry. It works great, easy, solves the dry winter heating problem. Since I then had no humidifier myself I bought this one to replace the one I gave away. Now we are all pleased w/ product, ease of use and results.