Since the period of the Berliner Tageblatt building, Mendelsohn had developed a strong association with the editor Rudolf Mosse, who appreciated not only Mendelsohn’s creative abilities, but also his intellectual acuity and literary versatility. This heating plant is another inspired work, using vertical panels of white brickwork, articulated and partly separated by metal uprights and beams. The disparity in height between the two blocks is emphasized by the curved profile, which avoids a mere confrontation between rectangular volumes. On both sides, the low windows of the upper floor create ventilation. The window of the main facade cuts across the entire building, while that on the side facade occupies two areas and is connected to a door. This precise work demonstrates that Mendelsohn’s skill did not depend solely upon a violently plastic form of expression.