I wasn’t expecting this device to work well, but I figured I’d give it a try. With the money back guarantee & buying from Home Depot, I could always take it back. Installation was fairly easy, just wrap the wire around the main water line per the directions. In about a day, I noticed the water felt silkier. Dishes looked cleaner after running through the dishwasher. Showers felt better. Water scum was disappearing from the shower walls. My wife is extremely pleased with it. The improvement in the water is tremendous. I’d recommend.