I wonder when the heat pump technology will be so widespread/standardized that I can for example buy a refrigerator and connect a couple pipes so that instead o

I wonder when the heat pump technology will be so widespread/standardized that I can for example buy a refrigerator and connect a couple pipes so that instead of releasing heat into the kitchen I can transfer that heat to warm water for a shower. Also, using washing machines flushing water to fill a bigger tanks later accessed by the house's toilet tanks should be standard procedure.