Features: direct coil heating system’s proven and trouble-free technology self-cleans for increased limescale resistance ideal for any residential application including: bathrooms, cabins and cottages heats water on demand, for endless hot water as long as it is needed but model size must be carefully matched to the application for proper operation electronic self-modulation technology ensures the least amount of electricity needed is used sleek european design is considerably smaller than a tank, requires no venting, and allows space-saving installation close to the point-of-use direct coil heating system provides fast heat-up and response digital temperature display for easy adjustment 7 years against leakage / 3 years against defects in workmanship & materials continued technological innovation from the world leader welcome to the latest water heating technology revolution from stiebel eltron. The robust and trouble-free direct coil heating system of the dhx series, stiebel eltron’s most advanced technology, is self-cleaning for superior limescale resistance. Ideal for residential and commercial point-of-use applications, dhx models heat water endlessly on demand at 99% efficiency. They have no stand-by energy losses because they do not store hot water like tank water heaters. the best technology the new direct coil heating system continues the benefits that are a part of the entire stiebel eltron electric tankless line. Dhx trend models heat water endlessly on demand at 99% efficiency. Activation rate for dhx models is a low 0.264 gpm.no venting is required and the compact european design can be installed with the unit visible. The desired output temperature is easily set using the dial and display on the cover. digital display dhx trend models are equipped with digital display screens. Desired output temperature, shown in f or c, is easily set