Abstract: Disclosed is a reversible radiator including an exchanger of the type constituted by a body with fins and a tubing traversed by a heating or cooling heat transfer fluid; a means of ventilation (designed to draw the ambient air, to force its passage through the exchanger and to eject it, heated or cooled, into the room; a frame, containing the aforementioned exchanger and the aforementioned means of ventilation, provided with an air inlet opening and an air outlet opening; and a plate, for storing and distributing calories or frigories, attached to the front wall of the aforementioned frame. The means of ventilation is constituted by a plurality of helical fans supplied with low voltage direct current, positioned, side by side, along the axis of symmetry of the front wall of the frame, facing and perpendicular to the longitudinal outlet opening of the aforementioned front wall. The exchanger is positioned on each side of the row of fans, parallel to the latter.