Data centers are among the most energy-intensive facilities. Air management is not only imperative for energy management but also for thermal management. The goal of air management is to supply as little supply air as possible at as high temperature as possible without adversely affecting the thermal IT-equipment environment. Several common air management measures were included in the Computational Fluid Dynamics (CFD) modeling to explore the energy-saving potentials. Measured data were also included in an effort to verify the modeling. The results will help improve the prediction of energy savings as well as improve the DOE Air Management (AM) Software Tool.