[osigurdson]

>> Electric resistance heat is super inefficient

I know what you mean but it is actually nearly 100% efficient. The inefficient part is converting high entropy heat to low entropy electricity.

[GeneralMayhem]

Heat pumps are significantly >100% efficient, if measured as (heat energy brought inside)/(electrical energy consumed).

[osigurdson]

Yes, because you are moving heat from one location to another. Same thing with a refrigerator.