Kinetico representative Nancy gave me great customer service I checked out several Water Treatment Services over a period of time Kinetico with just wonderful Nancy tested the water and explained everything came out and tested the system after it was installed and by the way the installers did a great job I can't remember their names but I told them it's the best-looking system I've ever seen also most important to wife with happy and love the soft water in the shower and the K5 drinking water system in the kitchen