J.C. Whitlam now offers a quick and effective way to remove scale, lime and rust buildup in tankless water heaters with its Flow-Aide system descaler kit and Whitlam Flow-Aide Descaler. The kit includes a compact 3.5-gal. bucket, 350-gpm pump, 1 feed/1 drain hose and 1 qt. of Flow-Aide Descaler. Service workers can restore the system to 100% efficiency in less than 30 minutes. It is nontoxic, noncorrosive, biodegradable and certified to NSF/ANSI 60 for use as a cleaner in potable water systems.