So it comes down to the onion working more or less to spec.
BTW, I don’t think it’s a huge leap for an air-cooled FF to be patched into an existing HVAC system more cheaply than new electrical equivalents. Same thing for low pressure steam and oil loops. I’d think that the FF as a heat source can work efficiently with appropriate existing plant infrastructure.
The proposed helium loop cooling the FF core lends itself to a modular cooling design paradigm where the helium delivers the heat to any setup that can carry it away fast enough… and there are some choices.
