The experimental work was carried on two different types of air outlets under the same operating conditions to determine thermal characteristics, and fluid dynamic. The first was sidewall grille while the other was ceiling grille. Experimental data were recorded for cooling case at different volumetric flow rates 135, 180, and 225 m3 /hr, and four different distributed loads 40, 60, 90 and 120 W/m2 , as well 90 W/m2 and 100 as concentrated load. A test room with dimension 2.3 by 2.15 by 1.0 m completed with motorized thermocouple carrier is constructed. Temperature and velocity throughout the test room were measured using thermocouples of type T (copper/constantan) and thermal anemometer respectively. The experimental results indicated that the number of air outlets, discharge angle, and location of air outlet play an important role in air distribution and comfort of occupants.