The present invention relates to an air system comprising one or more air ducts with electrically conductive elements integrated with the walls of said air ducts, in particular for purposes of air cleaning, heating, refrigeration, ventilation or air conditioning in a building or means of transport. The invention also relates to the use of electrically conductive elements integrated with the wall of one or more air ducts of an air system, for insulation of walls of said air ducts, and/or for communication between functional components of an air system and/or control of functional components of an air system and/or disinfection of the air flowing through the air ducts and/or heating of the air flowing through the air ducts.