Abstract: An infrared heating apparatus (1), in particular for the agricultural sector, for directional downward heating in livestock buildings, comprises at least one burner delimiting at least a conduit supplying an air/gas mixture, a reflector (3) enclosing the burner (2) and an air/gas combustion chamber (4) located at the burner conduit (2) end coaxial with the reflector (3). The burner combustion chamber (4) arranged coaxial with the reflector (3) co-operates with a solid screen (5) located beneath and in the axis of the burner conduit (2) to stop falling particles coming from the combustion and to reduce the intensity of the apparatus axial radiation thereby eliminating central overheating. The invention is useful for heating livestock buildings.