Abstract: All types of Freon, including those that do not contain chlorine and are not considered Ozone-depleting substances, have negative effects to the environment because they contribute to global warming. As a result of the harmful effects Freon has upon the environment, numerous research studies of existing refrigeration systems have been carried out. Some of those studies were related to the quantity of Freon that leaks out into the atmosphere, while others were related to what causes Freon to leak. The results of a research on quantity of Freon emissions from refrigerating systems in Serbia are shown in this paper. These findings are important since they represent the starting point when defining measures aimed at reducing Freon emissions and leakage from refrigeration and air conditioning systems.