22 UNIT SLIGHTLY USED STILL WORKS GREAT. MODEL NUMBER ECOWATER ERR3000R20.

　　More than just a water softener. . .the EcoWater WATER REFINING SYSTEM water treatment system is specifically engineered for municipal water applications. It will not only clean and condition your household water supply, but thanks to the addition of a layer of coconut shell carbon, the system will remove the smell and taste of chlorine throughout your home.

　　This comprehensive, state-of-the-art water treatment system features an internal microprocessor that monitors the amount of water you use and prompts system regeneration for actual and predicted future use. The demand regeneration technology with advanced electronic memory regenerates only as needed, and the programmed memory can be overridden to regenerate more frequently in the event of houseguests or sudden, temporary increases in water use.