One of our neighbors had a big wood heating unit. It heats hot water and circulates it everywhere therefore warming the house and providing hot water. We had some trees cut and offered them to him. Today he came to get the one that isn't in the soggy woods.
I really like his machines and maybe it isn't so awful since he doesn't do it all by hand. I seriously don't want that kind of heating unit no matter how self-sufficient it makes them.