Despite the progressive replacement of oil burnes by natural gas burners, thanks mostly to NG grid development, in some countries/locations, the Oil is still largerly used. In several situations furthermore, oil burners have an important back up role, where for any reason the NG source may stop. ESA, is among the two/three companies in the world marketing complete solutions to use oil, in a clean and efficient way, not only using traditional cold air burners but also usuing oxygen or regenerative technologies. To use light or also heavy oils means to cope with viscosity, ignition and heating problems which implies specific competence and ability to provide a complete solution. ESA offers all of this: