The invention provides a painting installation comprising a spray booth having an application zone in which parts are to be painted, at least one auxiliary zone being separated from said application zone, an air supply and an air exhaust system having a first air supply and a second air supply, an air-conditioning device, at least one baffle element being arranged between said application zone and said at least one auxiliary zone, wherein said first air supply is provided for said application zone and is conducted via said air-conditioning device, said second air supply is provided for said auxiliary zone and is separated from said air-conditioning device, said at least one baffle element is configured for optimizing the air flow conditions in the transition area between said application zone and said auxiliary zone, wherein said exhaust air from said spray booth is recycled and at least partially fed to said air-conditioning device, and wherein said application zone is supplied only with air-conditioned air via said air-conditioning device, while said auxiliary zone is supplied with air that is not air-conditioned or only partially air-conditioned.