Skuttle's "Happy House" logo stands for Indoor Air Quality. That's because an efficiently humidified home is fundamental to good health and quality of life. To meet homeowners' diverse humidification needs, Skuttle Indoor Air Quality Products manufactures 16 different models of humidifiers. Our primary competitor manufactures only a few-- all of which are flow-thru units. Why do we go to the trouble and expense of producing so many models? The answer is simple: Skuttle manufactures a humidifier that's compatible with virtually every home heating system, floor plan and water condition possible