The energetic efficiency of type vault kilns and its baking process can be considerably enhanced by carrying out adaptations in the original kiln’s characteristic geometries or by implementing hot air insufflation methods different from the ones used today and also by the usage of lower environmental cost fuels. These concepts have been applied in different artisanal brickworks all around Latin America in order to achieve the lowest emission numbers as possible but the highest effectiveness that system can submit. In this research, Different operating conditions were articulated based on the principle of complete tightness on kiln’s walls and inlet. These were, the remade floor distribution in some cases and the use of a burner as an air supply technique for others, considering in all circumstances the combustion of carbon as sole fuel. The kiln’s energetic efficiency was appraise using Computational Fluid Dynamics (CFD), which modeled the hot air flow and its corresponding heat transfer rates into the kiln and through the bricks, molded as a unique porous mass in it, for the diverse operation conditions. I As a Result, t was observed that the use of a burner on the kiln's inlet as an air provide manner, increases significantly the process’ energetic efficiency, no matter the kilns size. It was also identified that the usage of guiding walls under the brick porous mass as a floor support, contributed as well as the usage of recirculating exhaust gases with the purpose of preheating the air before the burner’s combustion chamber, to ameliorate the kiln’s energetic efficiency. Finally, the reformed cooking procedures and geometries which displayed the best energetic efficiency improvements were recommended as new methodology to be implemented on all kinds of artisanal brickworks with this type of kilns in order to achieve a substantial environmental cost saving as it was corroborated by the CFD model used in this study.