SuperGreen Infrared Tankless Water HeatersSuperGreen infrared tankless water heaters use far-infrared light to heat water directly, eliminating the number one cause of water heater failure: heating element corrosion and burn out. Infrared energy heats water quickly, only as needed, and controls the temperature to an exact degree. This technology combines specific infrared light frequencies, amplifies it within high temperature-stable quartz tubes and produces hot water with up to 60 percent less energy