The problem with this is that it isn't as flexible as a normal frige, it basically has to be built into the house. Also, if you don't have it next to a exterio

The problem with this is that it isn't as flexible as a normal frige, it basically has to be built into the house. Also, if you don't have it next to a exterior wall, you have to pipe the coolant through the walls or floors. It's a great idea, but it requires a major redesign of the refrigerator, and means you can't easily get a new one if it breaks or you want it bigger or smaller.