Method and device for the cooling of mobile living spaces, such as caravans, boats or the like in standby mode

The air conditioning plant has a cold medium circuit with a compressor (14), condenser (18) and evaporator (16), in a heat exchanger housing (22). There is at least one air diverting device for selectively opening at least one outside air aperture (44) of the housing at to admit outside air to the cavity (38), and also to interrupt the air flow by closing the inflow connection aperture (32).