Heat pumps exist for quite a while. The reason ypu hear about them is climate change, all alternatives, from gas to oil, burn fussil fuels. That discussion was

Heat pumps exist for quite a while. The reason ypu hear about them is climate change, all alternatives, from gas to oil, burn fussil fuels. That discussion was pushed by the war in Ukraine and, lately, a highly populized, and polarized, debate in Germany. The only alternative being equally good for the climate is using excess heat from industrial plants, e.g. those burning garbage. Up to know, at least in Germany, gas was just unbeatably cheap for heating houses. That's gonna change.