So glad I purchased this water softener. I had calcium build up on my faucets/shower that has increased over the years.  Hooked up the softener to supply the whole house with soft water. Followed the directions after sanitizing to run 50 gallons of water to flush out the unit and then I realized when washing my hands that I had soft water throughout my house. It was as if the soap wasn't washing off but in fact I had soft water and clean hands. Worried I would experience an off flavor with the tap water but it was just the same. Installation was moderate, set up was straight forward-following the step by step directions.  My recommendation to GE is to add a step by step video for specific model install/set-up so the DIY person can follow along to make the process more user friendly.