Heater component and compartment air conditioning system

The invention provides a heater member. The heater member includes a honeycomb structure, a cathode, an anode, and a functional material-containing layer. The honeycomb structure has an outer peripheral wall and partition walls disposed on the inner side of the outer peripheral wall and defining a plurality of cells that serve as flow paths extending from the inlet end surface to the outlet end surface, and at least the partition walls are made of a material having PTC characteristics. The cathode has a cathode portion A1 provided on the inlet end surface, and a cathode portion B1 connected to the cathode portion A1 and provided on the surface of the partition wall from the inlet end surface in the direction in which the flow path extends. The anode has an anode portion A2 provided on the outlet end surface, and an anode portion B2 connected to the anode portion A2 and provided on the surface of the partition wall from the outlet end surface in the direction in which the flow path extends. The functional mate