Noritz Tankless Water Heater‘s new H2FLOW scale treatment canister fights scale buildup. Designed for all water heater types and models regardless of manufacturer, it prevents the formation of scale to improve efficiency and prolongs water heater life. The unit uses no salt or chemicals and provides a more environmentally friendly alternative to water softeners. H2FLOW includes standard 0.375-inch (9.525-mm) connections with an inlet ball valve for quick and easy servicing; cartridge replacement once every two years.www.noritz.comjpan@noritz.com