This Wall Refrigerator Freezer from GE seems like a good idea to me. I wonder why it failed?
I just saw your posting about the wall mounted refrigerator unit. I was at an estate auction here in Kansas City MO last month when I saw one of these for the first time. I couldn't believe it. It was mounted on a wall of a whole vintage kitchen. Here's a link to my photo of it. They aren't the best pictures but you should find them interesting. Unfortunately I only took pictures of the fridge.
Keep up the great work guys!,