Patented Electronic Digital Demand Module: Solid- state electronics record usage patterns and control regeneration frequency based on predicted needs. Full menu-driven options.

Full One-Inch Riser: One inch diameter for increased flow rates, which ensures that household demand is adequately met.

Carbon for Chlorine Taste and Order Removal: The ERR 3500 unit features coconut shell carbon for chlorine taste and order removal.

Multi-Wrap Fiberglass Reinforced Resin Tank: Polymeric tank liner with a fiberglass wrapped exterior for strength. Doesn't deteriorate, rust, or corrode.

Self-Cleaning Distributors: Distributors exhibit excellent flow rates and are cleaned automatically by counter-current water pressure.

Positive-Action Brine Valve: Snap-together construction eliminates use of solvents that may contaminate water. Positive action helps prevent overfilling.

Patented Six/Eight - Cycle Valve with Easy-Clamp Ring and Patented Teflon® Discs

Patented Stratified Resin Bed: Patented mix of stratified resins provides superior filtation and iron removal without sacrificing flow rate capability.

Washed Quartz Underbedding: Washed quartz doesn't impart hardness in to softened water and allows for more powerful "piston effect" during counter current cycles.

HydroLink™ Remote (Patent Pending): Two-way remote technology that makes it possible to control and monitor the Series 3500 water conditioner from anywhere in the home.

Resin: Carbonremoves harmful chlorine which can attack the resin, extending the life of the system.

24-Volt Transformer - ENERGY STAR® qualified

Barium and Radium: This softner has been tested and certified by NSF International and WQA against NSF/ANSI Standard 44 for the reduction of Barium and Radium 226/228.