Demand for cooling in buildings across the European Union has grown steadily over the past decades—and all indicators suggest it will continue rising in the coming years. This trend, driven by climate change, presents an urgent challenge: ensuring thermal comfort in a sustainable way. In this context, the CoolLIFE project was launched. Funded by the EU’s LIFE Programme and coordinated by Eurac together with an international consortium of organizations, its goal is to provide open-source tools for integrating ecological cooling solutions into public and private decision-making.