I haven’t had any dealings with those systems. This is mine, heats up 200m2 no problem at all and burns very little wood. We will use 1 medium size log approx every 1.5-2hrs. I read somewhere in here of someone burning 12t in a winter. That would send one broke of you had to buy the wood at today’s prices!
It’s worth upgrading to a new wood heater imo, they burn very efficiently from what I’ve seen with ours.
