The Eccotemp EZ-Flush System Descaler Kit is the answer to any water scale, lime, or rust deposit build-up in virtually any piece of water-based equipment. The EZ-Flush system has been designed to work seamlessly with tankless water heaters and is compact for easy use and storage. It includes the Eccotemp Descaler that's specifically made to dissolve the toughest build-up and is a non-toxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems. Keep your tankless water heater running at full efficiency and ensure it provides hot water for years to come with the Eccotemp EZ-Flush System Descaler Kit.• Certified NSF/ANSI 60• Non-corrosive• Non-toxic• BiodegradableEZ-Flush System IncludesEZ-Flush System Descaler KitBuilt-In 1.8 GPM PumpOne Quart of Eccotemp Descaling SolutionTwo 5' Rubber HosesProduct Manual Compact for easy use & storage Includes 1 quart of Descaling Solution to dissolve the toughest build-up Non-toxic concentrate is certified to NSF/ANSI 60 standards