NORITZ’s ScaleShield Water Conditioning System provides superior limescale prevention and corrosion control within the water heater and plumbing system. It contains a water conditioning cartridge that creates scale-inhibiting solution for use with tankless water heaters. In many cases, the ScaleShield offers many of the same advantages as conventional water softening systems, except at a lower cost with little professional maintenance. When it comes to protecting your NORITZ tankless water heater, no other product offers the level of protection from limescale and corrosion than ScaleShield.