Juliusz Walaszczyk, Weronika Michalak Wydział Inżynierii Środowiska, Politechnika Wrocławska Ciepłownictwo Ogrzewnictwo Wentylacja, 2026 (1), 14-22, DOI: https://doi.org/10.65545/COW.2026.01.03 Keywords: ventilation, air conditioning, cooling, split units, refrigerants Abstract Introduction: Nowadays, considerable emphasis is placed on improving the efficiency of devices responsible for cooling buildings and, consequently, on reducing electricity consumption. In the process of enhancing efficiency and striving for climate neutrality, it may prove valuable to understand the current stae of the cooling equipment market in urban environments. Aim: To provide basic knowledge about cooling technologies used in a selected district of the city of Wrocław. To assess the systems found in the city in terms of nominal cooling capacity, installation methods, and the refrigerants employed. Methods:
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