In this work we present the results of an experimental investigation of heat transfer with a counter-current wall jet injection towards a main flow. In the experiments we studied heat transfer from a place of injection to the wall turn and downstream behind the place of injection. The investigation of an aerodynamic structure of a flow showed that the interaction of a jet with a counter-current flow resulted in the formation of a recirculation how zone, and the heat transfer distribution had the same salient features, characteristic to separation flows. The formation of a new boundary layer behind the recirculation zone occurs under conditions of high-intensity external turbulence and the presence of a main flow velocity gradient. Consideration of these salient features leads to good agreement of the calculated and the experimental data on heat transfer. It has been shown that a velocity increase of the injected jet results in heat transfer increase, both in the area from the place of injection to the jet turn and downstream behind a place of counter injection. It has been established that heat transfer regulation within a broad range of parameters may be carried out by means of a jet injection.