Smooth! Not cheap, but in this case I believe I got good value for the money. They were always quick to respond, timely, thoroughly professional, and helpful. They went above and beyond to diagnose an unusual condition (some sort of iron eating bacteria) and had a solution installed in two days. The system consists of filtering, softening, UV sterilizer, and ozone injector. Works like a champ. Highly recommended. You won't be disappointed.