Abstract: An air conditioning unit includes one or more evaporators and the one or more heat exchangers consisting of flat tubes made of light metal. At least one of the heat exchangers, at least one of the evaporators, at least two of the condensed water tanks and at least one of the fans for the one or more evaporators and/or heat exchangers together form one module and are surrounded by a housing. The condensed water tanks are arranged in transverse alignment relative to one another in the module, in order to collect condensed water and can be adapted to various mounting positions of the module. The compressor and/or the expansion valve, respectively, are interchangeable to adapt to various performance requirements of the evaporators. The performance of the fans is changeable to adapt to performance requirements of the evaporators, or the fans are interchangeable.