Abstract: The invention relates to an arrangement for a body structure (2) of a vehicle (1), comprising a load-carrying structure (3) which is arranged essentially transversal to the longitudinal direction of the vehicle and mounted in each side of the vehicle (1), and an air conditioning system comprising an air conditioning unit (10) having components for air treatment. The invention is characterized in that at least a section (11) of the air conditioning unit (10) is functionally integrated with beam structure (3). An integrated arrangement with high strength and low weight is provided, which arrangement can also be easily built into a vehicle.