So we decided that our first project would be to install a wood boiler. This way we’ll be able to heat the house, hot water, and greenhouse with wood instead of burning oil or gas. Unlike oil or gas , wood is a renewable and cheap/free resource. We got plenty of it, and haven’t had to chop down a live tree yet, only standing dead ones. The boiler burns wood slowly and very efficiently using a natural draft system, and it doesn’t release large amounts of carbon dioxide into the environment like most heating systems do.