I did not install this unit, but waited 3 weeks for service from Sears Service. It needed an additional part, which the Sears parts department service employee wisely told me, was also necessary. The very competent Service Man installed both units in a very complex installation process needing specialty equipment for installation. The parts necessary were shipped to me and arrived four days after I called. The parts department personnel was extraordinary and most helpful in explaining what had happened to my 7 year old refrigerator. It appears that these “energy efficient” appliances lack any of the longevity of the older refrigerators. I will be going through this again, it appears.