This was one of the worst experiences of my life. The Rainsoft water treatment system is good, but the company that markets and installs it is the epitome of hard-core, high-pressure sales tactics. They come into the home with the false claim of free water testing, but only test for hardness, pH, and chlorine, which can be done with a simpe, cheap product from your local aquarium supply store. The sales rep couldn't answer technical questions about the product, misrepresented financing options, and wouldn't leave when I asked him to. They kept insisting I just "try the product". When they showed up to finalize the financing, it was not the arrangement I expected, but I had passed the 3-day return period. They threatened me with legal action, I should have called their bluff, but backed down. If you want a water treatment, shop around and deal with a reputable company, not a marketing company. I have a system that works, but it is overpriced and I could have done a lot better with someone else.