**5. Conclusions**

Gathering high resolution outdoor temperature data during the last eight years with half an hour time frame was important for this case of study because it provided the opportunity to calculate cooling and heating degree-days. The weather factor is the most significant variable in this case study, which means that the university administration will achieve better results in term of reducing end user costs by investing in the e fficiency of the HVAC system and then improving the thermal performance of the campus buildings. It has been found that research buildings consume four times more energy than teaching or administration buildings. In addition, behavioral changing programs are recommended, especially in cases like ours, where the properties are open to the public and the managers are challenged to lead the users toward sustainable actions—for instance, starting a program that aims to share information about the evolution and the gains of EC with the students and sta ff which could be useful to raise awareness about the continuous increase of energy use inside the campus. A similar experiment was executed in dormitory residences, and the results show that the group of residents who received real-time data feedback were more e ffective in energy conservation gains. The buildings from our portfolio that scored a higher energy intensity should consider installing solar panels on their roofs. Additionally, setting up systems like occupancy sensors for automatic lighting will increase e fficiency. Nonetheless, energy conservation measures should not a ffect the indoor quality; for this reason, we must be able to reduce EC while retaining indoor quality.

**Author Contributions:** M.C. dealt with literature review, analyzed the data and wrote the draft. E.S.-M. and F.M.-A. Research idea and article writing. They share the structure and aims of the manuscript, paper drafting, editing and review. All authors have read and approved the final manuscript.

**Funding:** This research did not receive any external funding.

**Conflicts of Interest:** Declare no conflict of interest.
