Abstract : In this paper, air distribution parameters inside the selected control room in cooling mode ventilated by cassette type air conditioner was analyzed. In this work, the investigation in both experimentally and numerically have been conducted. An proper control room was selected for experiment design with dimensions of 4.8m width, 5m length, and 3.55m height. Furthermore, the instrument devices for measuring the air temperature and air velocity were arranged and prepared. An ANSYS workbench software was utilized for CFD simulation to analysis the air distribution numerically and compare the results with experimental work. The same dimensions of the room and 4 way cassette air conditioner were used as physical modelling by ANSYS design modular. Mesh independence was applied to obtain the accurate data. Reynolds averaged Navier–Stokes equation (RANS) and the standard k-epsilon k-ε transport equations were utilized to estimate the streamline of the air inside a control zone. The outcomes revealed that average percentage error between predicted and empirical data was 8.88% for velocity readings and (7.6%, 2.8%, and 3.2%) for temperature results on (pole 1, pol 2, pole 3) respectively. As a result, we can state that the experimental data validate the numerical model.