Think small - about the size of a briefcase - and you'll understand how eSeries generators can be tucked away, out of sight You can install the generator up to 60 feet away from the steam shower - and even locate it on another floor altogether With a water temperature equalization chamber that is unique to MrSteam, Auto steam - which comes standard with every generator - assures a continuous flow of steam, with no pauses and no cold spots eSeries generators use no more than two gallons of water for a 20-minute steam shower, making them the eco-conscious luxury bathing option Robotically welded, eSeries generators are built with recyclable, surgical-quality stainless steel inside and out Microprocessor operating control Precision Temperature probe for optimal steam room control Removable and serviceable heating elements Integrated Time Cutoff Feature Made From 100% recyclable stainless steel inside and out