I ordered this product from Edenpure in January 2012. Tried it for 9 months and it absolutely does not work. I shipped it back and asked for my money back, but they refused to return my money. Beware!! Do not waste your money on this product........it does NOT work as advertised. It made absolutely no difference in my water. I tried to post a review on Edenpure site, but no way to do it. Guess they want to pick and choose the comments they include on their site. Only the good ones. Again, DO NOT BUY the Scalerid 2000 or any products from Edenpure. Dont make the same mistake I did. Rating should be zero stars or negative stars.