An independently-controlled PTC (Positive Temperature Coefficient) heater, comprising: a PTC unit including a guide frame having a first opening to which a first PTC element is mounted and a second opening to which a second PTC element is mounted, the second opening being located to be biased from the first opening; a first electrode plate having a first body configured to make surface contact with one surface of the first PTC element and a first connector extending from the first body, the first connector being formed with a smaller width than the first body; a second electrode plate having a second body configured to make surface contact with one surface of the second PTC element and a second connector extending from the second body, the second connector being formed with a smaller width than the second body; and a common electrode plate having a third body configured to make contact with the other surfaces of both the first and second PTC elements (110-1, 110-2) and a third connector extending from the third body, the third connector being formed with a smaller width than the third body, characterized in that the independently-controlled PTC heater further comprises: a heating tube in which the PTC unit is mounted and made of a metal material; a heat diffusion fin provided at a side of the heating tube; and an insulation member configured to insulate the first electrode plate, the second electrode plate and the common electrode plate from an outside wherein the second connector extends at different location from the first connector, the third connector extends at different location from the first and second connectors (133, 143) and wherein the second and third connectors (143, 153) extend in the same direction as the first connector. a PTC unit including a guide frame having a first opening to which a first PTC element is mounted and a second opening to which a second PTC element is mounted, the second opening being located to be biased from the first opening; a first electrode plate having a first body configured to make surface contact with one surface of the first PTC element and a first connector extending from the first body, the first connector being formed with a smaller width than the first body; a second electrode plate having a second body configured to make surface contact with one surface of the second PTC element and a second connector extending from the second body, the second connector being formed with a smaller width than the second body; and a common electrode plate having a third body configured to make contact with the other surfaces of both the first and second PTC elements (110-1, 110-2) and a third connector extending from the third body, the third connector being formed with a smaller width than the third body, characterized in that the independently-controlled PTC heater further comprises: a heating tube in which the PTC unit is mounted and made of a metal material; a heat diffusion fin provided at a side of the heating tube; and an insulation member configured to insulate the first electrode plate, the second electrode plate and the common electrode plate from an outside wherein the second connector extends at different location from the first connector, the third connector extends at different location from the first and second connectors (133, 143) and wherein the second and third connectors (143, 153) extend in the same direction as the first connector. a heating tube in which the PTC unit is mounted and made of a metal material; a heat diffusion fin provided at a side of the heating tube; and an insulation member configured to insulate the first electrode plate, the second electrode plate and the common electrode plate from an outside wherein the second connector extends at different location from the first connector, the third connector extends at different location from the first and second connectors (133, 143) and wherein the second and third connectors (143, 153) extend in the same direction as the first connector.