An electric heater for an automobile vehicle, with an electronic controller and a heat transmitting net, whereby the heat transmitting net contains a multitude of PTC-heating elements, a multitude of contact sheets and heat dissipating fins, whereby the PTC-heating elements are respectively arranged between two adjacent contact sheets and form a heating element with the contact sheets whereby some of the contact sheets are connected to connectors, which are arranged at the electronic controller and are connected to either a positive pole of a power supply or a negative pole of a power supply and are arranged in an alternating order, whereby the quantity of connectors that are connected to a positive pole of a power supply and the quantity of connectors that are connected to a negative pole of a power supply differs by one.