Air conditioner for a vehicle, especially a rooftop air conditioner for mounting on a vehicle roof

The invention relates to an air conditioner for a vehicle (10), such as a bus, a truck or a rail vehicle, in particular a rooftop air conditioner (14) for mounting on a vehicle roof (16), with a capacitor module (18) comprising a capacitor case (24) includes and arranged in a capacitor housing (24) capacitor (20), a support frame (38) carrying the capacitor module (18) and to the vehicle roof (16) holds. It is expedient that the capacitor housing (24) having a first housing part (42) and a second housing part (44), said first housing part (42) separately to the second housing part is formed (42) in the installed state between the capacitor (20) and vehicle roof (16) and the vehicle roof (16) below the condenser (20) at least partially. Further, the invention relates to a vehicle comprising such air conditioning system (12), wherein the air conditioner (12) on a vehicle roof (16) of the vehicle (10) is arranged and formed an inner space of the vehicle (10) to air-condition.