I got the filterdirect unit and had horrible problems with it, and customer support is non existant. In the end I just put it in a box and ordered another unit from airwaterice. WIth the Airwaterice unit I got Zero TDS from it on the very first gallon of water it made! If you decide to use filterdirect forget about help if it goes bad or does not work properly. I don't even think they have a help department, you just get a standard email saying "send it back".