Suction head configured to be applied in a vacuum cleaner and to perform a cleaning action on a surface , the suction head comprising: a housing , and at least one brush that is arranged in the housing to be rotatable about a rotation axis , and that is configured to interact with the surface to be cleaned, wherein the housing is configured to expose a portion of the brush to the surface to be cleaned and to cover another portion of the brush , wherein a surface of the housing facing the brush is provided with an outlet opening that is configured to be in communication with an air suction source configured to invoke a flow of air in a direction away from an area of the housing where the brush is located, through the outlet opening , characterized in that the surface of the housing facing the brush is further provided with a plurality of grooves , wherein the plurality of grooves comprises two sets of grooves , which are located at sides of the outlet opening which are opposite sides in a longitudinal direction ( l ) being the direction in which the rotation axis of the brush extends, wherein each of the sets of grooves includes grooves which are oriented with a circumferential component about the rotation axis and with an axial component in the longitudinal direction ( l ), wherein, as seen in the same circumferential direction (c) about the rotation axis , a direction of the axial component of the grooves of the one set of grooves is opposite to a direction of the axial component of the grooves of the other set , and wherein a distance between the surface of the housing facing the brush and an operational outline of the brush is a distance in a range of 0 mm to 2 mm, in areas of the surface of the housing facing the brush outside of the grooves . a housing , and at least one brush that is arranged in the housing to be rotatable about a rotation axis , and that is configured to interact with the surface to be cleaned, wherein the housing is configured to expose a portion of the brush to the surface to be cleaned and to cover another portion of the brush , wherein a surface of the housing facing the brush is provided with an outlet opening that is configured to be in communication with an air suction source configured to invoke a flow of air in a direction away from an area of the housing where the brush is located, through the outlet opening , characterized in that the surface of the housing facing the brush is further provided with a plurality of grooves , wherein the plurality of grooves comprises two sets of grooves , which are located at sides of the outlet opening which are opposite sides in a longitudinal direction ( l ) being the direction in which the rotation axis of the brush extends, wherein each of the sets of grooves includes grooves which are oriented with a circumferential component about the rotation axis and with an axial component in the longitudinal direction ( l ), wherein, as seen in the same circumferential direction (c) about the rotation axis , a direction of the axial component of the grooves of the one set of grooves is opposite to a direction of the axial component of the grooves of the other set , and wherein a distance between the surface of the housing facing the brush and an operational outline of the brush is a distance in a range of 0 mm to 2 mm, in areas of the surface of the housing facing the brush outside of the grooves . <EOS>