H2F Noritz H2FLOW Anti-Scale System The H2F Anti-Scale Hard Water Treatment System collects unwanted minerals before they can get to your tankless water heater system, boiler, or tank type water heater. The H2F helps reduce lifetime maintenance on the entirety of your piping system, maintains your energy efficiency, and effectively removes scale from your water. The productiveness of the H2Flow maintains a safe lead and chemical free anti-scale treatment process, creating zero discharge and no backwash, making it the ideal hard water solution.Scale: The H2Flow (H2F) hard water solution uses TAC (template assisted crystallization) to attract the minerals that otherwise would form on your pipes and heating elements. These unwanted minerals combine to form scale, but with the H2Flow system, this buildup is avoided, and your system continues to function like new, protecting the pipes and the investment you make in your tankless hot water heater. H2Flow is the most effective and economical hard water solution for tankless, boilers, and tank type water heaters, making it a wise choice no matter how you heat your water. Designed for all water heater types and models regardless of manufacturerPrevents scale formation to improve efficiency and prolongs the life of your water heaterUses no salt or chemicals and provides a more environmentally friendly alternative to water softenersIncludes standard 3/4" connections with an inlet ball valve for fast servicingLow Maintenance - replace the H2Flow cartridge once every two yearsMax. Operating Temperature: 100°F/38°CMax. Operating Pressure: 90 psi/620.1 kPaGallon Rating: Up to 6 GPM 0.5 to 10 GPMAlso includes mounting bracket and filter wrench designed to make installations and maintenance quick and easy COMPATIBLE WITH ALL WATER HEATERS