Collection ScaleShield Anti-Scale Hard Water Treatment Replacement Cartridge for Tankless Water Heater The HBC-1 is a replacement cartridge for the SS-HB-1 ScaleShield. Scale shield provides superior lime and scale prevention for your tankless water heater. Protect your system from corrosion and retain the beneficial minerals in your water with the unique SS-HB-1 anti-scale hard water treatment system, and keep a replacement cartridge on hand to ensure your water quality is always up to par, for you and your pipe lines. Scale: The SS-HB-1 ScaleShield is a hard water solution that gathers the minerals that otherwise would form on your pipes and heating elements. These unwanted minerals combine to form scale, but with the ScaleShield system, the build-up is avoided, and your water is still able to maintain the beneficial minerals without creating waste. Scale shield is an excellent choice for your scale prevention and corrosion control needs. Features: Protects the longevity of your tankless water heater system Maintains energy efficiency Reduces maintenance Zero discharge Introducing the latest advancements in tankless water heater technology for your home, Noritz tankless hot water heaters are both eco-friendly and energy efficient, providing savings up to 40% in utility costs. Their gas water heaters warm water on demand, which means you'll always have hot water and it will never run out.