Defrost the freezer if necessary. If a considerable amount of frost has built up in the freezer, you'll need to defrost it before going forward with the move. This would normally take 6 to 8 hours to complete, so make sure you have ample time before the move.It is best to do this the night before the move so there would be enough time to defrost overnight, and you can wipe the inside of the refrigerator in the morning.his would normally take 6 to 8 hours to complete, so make sure you have ample time before the move. It is best to do this the night before the move so there would be enough time to defrost overnight, and you can wipe the inside of the refrigerator in the morning.