I think everyone already knew that heat pumps are more efficient than combustion heating. The real-life difference is that gas or oil furnaces are simple techno

I think everyone already knew that heat pumps are more efficient than combustion heating. The real-life difference is that gas or oil furnaces are simple technologies that are easy to maintain and fix. Heat pumps, especially the variable-speed kind (which I'm sure is either popular or mandated in Europe), are much more finicky in comparison. In the US, at least as of late, supply-chain issues are still such that it's often faster to just buy a new AC unit than wait for parts to fix a broken one.