Objective: hygienic assessment of the impact of use local air condition systems to changes mi-croclimatic parameters and comfortable stay of the person in the room.
Materials and methods. The analysis of information sources shows that qualitative and quanti-tative criteria of hygienic assessment of microclimate parameters are differ. Air temperature, air ve-locity, temperature of surrounding walls, humidity was determined with the help of devices during work of air condition system.
Results. The results of these studies show that the decrease of air temperature at various points of the room are different and depends on the height of the measuring point and the distance from the air conditioner. Local air condition systems are a source local thermal discomfort due to vertical air temperature difference between head and feet. The experimental and calculation data showed that the work of local air condition systems creates the conditions of the local thermal dis-comfort and predicted percentage dissatisfied from 19 to 74%. The work of local air-conditioning sys-tems leads to discomfort due to draught and the percentage of dissatisfied from 18% to 77%.
Conclusions. The results of these studies demonstrated that use of local air condition systems create to the differences of microclimatic parameters such as vertical air temperature, turbulence in-tensity, air velocity, temperature of surrounding walls and increased quantity dissatisfied of thermal environment.