it might work.

But there exist sooo many prototyping breaktroughs.

Those who follow press releases for many years know that just a tiny fraction can transfer this in real world products that actually work

(so many more challenges to overcome compared to prototype situations!! I don’t even know where to begin… every ground is different, average person doing the manual work is not as skilled and has less support engineers, the guys setting/defining the dimensions of various recipients/pumps/conduits are often undeskilled and the efficiency often lacks tremendously for that reason…)

My thinking on it is: It'd better work, they're just trying to catch up to the state of the art. The bigger news would be if Lennox CAN'T make a COP 2 at 5F heat pump. :-