Abstract: A combustion system and method for liquid fuels includes atomizing the liquid fuel, withdrawing heated air from an enclosure which is to be heated by the fuel, contacting the atomized liquid fuel with the heated air which is at a temperature sufficient to instantaneously vaporize the fuel and in a quantity sufficient to form a combustible mixture with the vaporized fuel, and burning the combustible mixture to heat the enclosure. In addition, a dual fuel system is disclosed which is capable of using either the aforementioned liquid fuel system and method or a natural gas combustible mixture.