Although we haven't performed a manual defrost yet, so I can't attest to that, this freezer works very well.  It is quiet, very roomy, and the lights on the outside, showing proper temperature or if the temperature gets too high is helpful as well. We are very happy with how much food we can store in this freezer, and its energy efficiency can't be beat.  We needed a garage-ready model in this size, and this one fit the bill.