This final paper presents the measurement of air volume flow on a laboratory air conditioning system. In the theoretical part of the final paper, the importance of the amount of air that needs to be brought into the room by the air conditioning system, and the ways in which the air flow is regulated, are explained. The general air conditioning system is described, along with the presentation of technical data and operating characteristics. In the practical part of the final work, the air conditioning system in the laboratory and the measuring hood with which the volumetric air flow will be measured are described. The measurement was made for three operating speeds of the fan convector, on three different flow elements and at different operating modes. System operating points for all operating modes, installation characteri stics, and analysis of different operating modes are presented. For one of the operating modes, a comparison was made of the results obtained by measuring and calculating flow losses.