I am building right now and my state (washington) recently decided no more natural gas heat, heat pumps only. That's great for the warmer side of the state but most heat pumps don't work great when it's 10 below - they approach zero efficiency the colder it gets. Blueheart seems to claim they can output 60C on the hot end when the cold end is -20C. In addition, EQUIUM seems to claim a 30 year lifetime on their acoustic chamber because it has essentially no moving parts, it's just a pressure vessel. If both of these things are true it could eventually be an advantage over heat pumps for people in cold conditions or people who are sensitive to maintenance costs once the technology is mature.
Or all the (very vague) specs could be marketing junk and it's vaporware. Neat either way.
Or all the (very vague) specs could be marketing junk and it's vaporware. Neat either way.