Great unit! Operates as described and produces 0 TDS filtered water. I subtracted one star because the supplied fitting to attach under the sink for the water supply was a 1/2 fitting and my water supply was actually a 3/8 fitting. I had to go to Lowes and purchase the correct fitting (see photo) at an extra cost of about $10. Nowhere in the product description did it mention that the supply line adaptor was 1/2. It simply says that all the fittings are included, which implies that everything one would need is included. In my case, that turned out not to be true. However I am happy with the unit and a trip to Lowes rectified the problem. Now I just have to spend some time routing all the tubing a little better.

I attached a y connector to my cold water laundry faucet and mounted this on a plank of wood nearby. The directions to get it set up were easy to follow. I bought a TDS tester and my water going in is pretty low at about 39, but it is always 0 coming out. So I'm very pleased with this so far. I've made probably 50 gallons so far, and I haven't had any issues as far as I know.