The Group of authors proposed the method and the flow test results in axial fans that are applied in the air-cooling equipment. The use of finite-volumetric analysis method, numerical simulation, full set of Navier-Stokes system of equations a result of flow tests has come to a new form of fan equipment blades that illustrates higher efficiency when compared with the initial shape of blades. The use of modified designing means and methods of flow analysis in the fan enabled us to increase the energy efficiency of the fans within the frames of unchanged size of air-cooling equipment (АCE.), thus reducing the level of noise.