Currently, due to the constant rise in energy prices, the search for ways to save energy resources is becoming increasingly important. One solution could be heat utilization systems from building engineering equipment, since they are often very energy-intensive. This article discusses the current problem of saving energy resources by recycling heat from refrigeration systems of ice arenas. It is known that refrigeration equipment used for central or remote refrigeration supply (ice arenas, supermarkets, food industry enterprises, etc.) generates a fairly large amount of heat, which, during the process of refrigerant condensation, is most often recycled into the environment using air condensers, which is not energy efficient. The paper presents the results of an analysis of domestic and foreign experience in implementing modern energy-saving measures for ice arenas. The most frequently applicable and energy-efficient measures to save energy resources have been identified. A real object - an ice arena - is considered, its technical problems that arose during its operation in the field of energy-efficient operation of refrigeration machines are described. The goal was set to develop measures that increase the energy efficiency of the operation of refrigeration machines, corresponding tasks were formulated, ways to solve them were proposed, and their energy efficiency was analyzed.