Satamax, thank you for responding.
I have already collected most of the materials
Do you have experience with "boisseau terre cuite" to use in your RMH?
See this link:
I guess Monetier is a little far away, I'm an hour north west of Beziers, near Murat sur vebre.
Winters are quite strong and long here. -10 is no exception.
Maybe I can ask you some questions:
How are the winters in Monetier?
Do your RMH's run well?
Are you satisfied with the amount of heat they can produce? I want to heat a big house with two.
Can I see some pictures of your RMH's?
Did you stick to the desciptions in Evans' book?