A wood stove generates good heat for a home and it can even be adapted to handle the heating of water through a DIY copper piping attachment. The two wood stove water heating attachment designs showed here are just examples of this can be achieved.
As the price of energy keeps going up, it is wise to utilize readily available sources of energy and make them more versatile, like this oven that attaches to the pipe of a stove
This DIY project is complicated and you need to have a good experience in welding and soldering, in order to avoid leaks and other high heat steam hazards. However, it can be a viable alternative to expensive water heating costs.