## 6 Conclusions  
An analysis of the thermal restoration of an outpatient medical center in a tropical region like the City of San Francisco de Campeche was presented to reduce its energy consumption. An energy audit of the building was carried out, collecting data for one year to design and validate a numerical simulation model and verify improvement strategies. Among the improvement options analyzed are passive modifications to the roof (insulating material, reflective coating, and green roof), alterations to active systems integrating inverter technology, and changes to the walls using reflective paint. The results of the simulated improvement scenarios were analyzed using energy, environmental, and economic indicators, which were subsequently contrasted with TOPSIS decision-making algorithms to identify the alternative that best compensates the three options. \begin{table}
\begin{tabular}{c c c c} \hline \hline \multicolumn{3}{c}{**Priority Percentage**} \\ \hline
**KPI** & **CEI** & **NS** & \\ \hline
10 & 10 & 80 & Reflective coating on roof with inverter air conditioner (Case B-III) \\
20 & 10 & 70 & Reflective coating on roof with inverter air conditioner (Case B-III) \\
30 & 10 & 60 & Reflective coating on roof with inverter air conditioner (Case B-III) \\
40 & 10 & 50 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
80 & 10 & 10 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
70 & 10 & 20 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
60 & 10 & 30 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
50 & 10 & 40 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
10 & 80 & 10 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
10 & 70 & 20 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
10 & 60 & 30 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\
10 & 50 & 40 & Reflective coating on roof and walls with inverter air conditioner (Case C-II) \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Results of integrating the TOPSIS method to identify the trade-off of the environmental, energy and economic indices. Energetically, the results showed that adding passive technologies increases energy efficiency by 11%. Under this scenario, the most significant energy savings are modifying the roof, compared to placing reflective materials on the walls. However, combining both strategies improves the building performance mainly in the winter season. Integrating inverter technology in air conditioning equipment and roof coatings improved energy performance, with inverter-reflective coating technique being the most attractive, with 28% savings. This saving results in the mitigation of around two tons of CO\({}_{2}\) per year from an environmental perspective. The economic results indicate that all the options that integrate reflective paint generate the best net savings. The above is derived from the affordable value of this passive technology. However, many options that have energy and environmental benefits do not achieve economic rewards. The above is an indication of the need to implement strategies that promote better use of energy with an environmental perspective through carbon credits as in other countries, which Mexico currently does not have. Finally, the TOPSIS approach indicates that integrating reflective paint on the roof and walls with inverter air conditioner would represent the most attractive option in most cases. However, by prioritizing the economic aspect, it remains in the background. Based on these results, the following conclusions are drawn:  
* Due to the climatic conditions of high temperature and humidity, the green roof and polyurethane insulation present the lowest energy savings.