I am sure we have all wondered about the differences between "Propane and Natural Gas?" I have done a little bit of research on the two. The biggest difference I found was one consists of a gas called "Methane" that was the biggest factor in the fundamental capabilities these two can offer you. Natural Gas is the one that consist of Methane and it will only put out 1,012 BTU per cubic foot. The brighter side is the Propane, it gets much hotter doubling the heat in an amazing 2,500 BTU per cubic foot. There is really no comparison in which one is most effective.....C.Kempton 2009.