An exhaust gas heating system is provided, comprising a first end face, a second end face, a plurality of honeycomb segments, and a plurality of electrically nonconductive layers. Each honeycomb segment comprises an array of intersecting walls forming channels extending axially between the first end face and the second end face. The intersecting walls comprise an electrically conductive material. The heater further comprises a plurality of electrically nonconductive layers arranged between adjacent segments of the honeycomb segments. The arrays of intersecting walls of the honeycomb segments are electrically isolated from each other by the nonconductive layers. The exhaust gas heating system further comprises a coil wrapped around an external surface of the heater arranged between the first end face and the second end face. The exhaust gas heating system further comprises a DC to AC converter configured to supply the coil with an AC current.