Heat Hero is a great system and it WORKS! I’ve fitted this in my own house. Radiators are pumping within 1 hour of lighting the stove. I have 14 radiators (All doubles and a few cast iron radiators) I have a Stanley Lismore Stove which is 14kw (4kw to the room and 10kw to the heating water) it heats all the radiators no problem. Great product and designed by a great guy Art, he is more than helpful with any questions when fitting.
I would highly recommend the Heat Hero!