This is the second unit I've had and the install is very straight forward. Just make sure you've drilled your hole to the right size and in the right place. I think one of the drawbacks is the less than clear fact that you also need the the hot water generator and that doubles the price of the whole install. Be sure you plan for the real estate necessary under the sink for the unit.

The only operating issue appears to be a little too much pressure on the hot water side. Instead of a steady stream we get a broken spray. I can scald if you're not careful.