The Skuttle F60-2 humidifier is a whole house steam humidifier designed to be installed on a forced air heating system for a home or office. It operates on 240 volts and comes with an automatic flushing system which enables it to be self cleaning. Maximum humidifier efficiency depends upon the tightness of your home, the hardness of your water and a variety of external factors. Consult us for the Skuttle home humidifier that's best for you.