A vertical vaporising waste oil burner running on Vegetable oil. This burner is the same setup as the Chamber pot oil burner. The burner operates on pyrolising the veg oil to a gas for combustion. The burner can be easily and widely controlled in it's heat output by the regulation of the waste oil fuel alone or with the incoming air. The burner is suitable to be installed in a number of applications particularly those requireing a dispersed hot gas input such as those usualy running on gas.