Someone in a self-build group suggested a boiler stove instead of just a burner requiring separate water heating. The oone they linked to had a heat output of 2kW with 8kW going to the water. That seems low given we’ve been told we need a 10kW stove for m2.
Cost wise they’re not much difference though. Something to consider?
This one, the Stratford EBW12, has a total output for 24kW, of which 6kW goes into the room and 11.8kW into the water.
It has a direct air supply (required by RT2012).
Trying to find out why you’d choose a water heating stove and the Centre for Alternative Technology have an article suggesting that it’s not worth it unless you have a super-duper stove such as the Broseley eVolution 26 boiler. With this you get 10kW for heating and 15.8kW for hot water heating. I can’t find a price for it though!
I got a message back from someone else about an hours drive away building a GREB house with a similar budget to us. They have a new baby so are pretty busy right now but are happy to be in touch so I will email him back asap.
He recommended getting in touch with the free architect, CAUE, and also with Ariege Conseil Energies Renouvenables (http://acer09.fr). I’ve seen that site before and now I have a recommendation I’ll follow up with them. I’d sent an email to the CAUE in Carca back on 10/10 so have sent a chaser message to them.