>The practical problem is that you need to have the different parts work together, and fridge makers don't don't to hot water makers. You don't need a fridge o

>The practical problem is that you need to have the different parts work together, and fridge makers don't don't to hot water makers. You don't need a fridge or a hot water heater or an ac or a furnace at that point, because the primary function has been offloaded to the central heat pump. you need heat exchanger attached to water, heat exchangers attached to a cold room, heat exchangers attached to a central air system. You don't have to have the parts work together if the most expensive part of each appliance has been centralized. At that point you've now reduced the appliance to where to put the heat exchanger.