Abstract: Process for air conditioning of the passenger compartment of a motor vehicle by means of an air conditioning system (7) using solar power which is obtained via at least one solar module (1) which is attached to the motor vehicle, especially on the motor vehicle roof, and which is also used for charging a battery (4) of the motor vehicle, in which the solar power is used additionally or alternatively to charge the motor vehicle battery (4), and also to operate a ventilation system (6) when the vehicle is unoccupied, and in which the air conditioning system (7) is activated prior to entry of a passenger into the passenger compartment, the air conditioning system being operated so as to draw most of its power from the motor vehicle battery (4).

Abstract: A climate controlled vehicle seat for interior climate comfort in motor vehicles, more specifically, the ease of climate control via a motor vehicle seat, is increased based upon a fluid for transport of heat or cool to a corresponding heating or cooling element, or a combined heating/cooling element which is installed in the motor vehicle seat and which is connected to a heat or cold source which is present in the vehicle for other heating or cooling purposes. This heating or cooling of the motor vehicle seat is favorable in terms of energy and is also, with respect to health, safe to use. The corresponding heating and cooling fluid is taken from the secondary circuit of a heat exchanger which is preferably filled with pure water, i.e. with water which does not contain any harmful additives.