The invention relates to an air-conditioning device and to a method for the operation of an air-conditioning device. The aim of the invention is to improve current air-conditioning devices such that a desired level of temperature inside the motor vehicle changes as little as possible and the windows are kept mist-free. As a result, each bypass channel, which guides the heat exchanger to an air outlet channel, is associated with a mixing flap in order to control the warm air flow passing through the bypass channel.
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