Question: How many dual fuel (coal-wood) stoves are available. I have seen the Harman "E". What else is available? I would like the option of either fuel - is dual fuel real or a gimmick? Answer: The Harman is one of the FEW that can do this. It's not a gimmick- but you should decide if you really want to burn coal before purchasing. If you are going to burn only wood- you can probably get a better or bigger stove for less money.