Replaced Air diffuser and both Thermistors. Easy. But you will need a long 1/4" nut driver. The only point of confusion is that in the video there was a small cover over the freezer section of the air diffusor; but in my unit the cover was one piece with the "L" shaped cover that attaches to ceiling and top/back. I thought I lost the cover somehow, but I think it was a change in design.