As it stands now it's a heat pump that pumps the heat from your refrigerator into your home. Wouldn't it be possible to create way more energy efficient model that has an outside body? Or even better connects to the AC body you already have outside? Like in the summer it would "help" the AC by being another AC itself, and in the winter it would effectively be "free" as it got its cold from the outside.
I'm sure there's a reason nobody has attempted this (complexity / price) but was just wondering what the data point on something like this would be? Presumably with modern buildings this could be reduced accommodated, especially with geothermal AC being on the rise right now, would be cool to have all your heat pump systems connected to a single loop, sharing efficiency.