A heater mat for heating an airfoil having a chord, a leading edge, and a trailing edge includes a first zone element configured to heat a first chord-wise segment of the airfoil. The system further includes a second zone element configured to heat a second chord-wise segment of the airfoil that is adjacent to the first chord-wise segment of the airfoil. The system further includes a first zone busbar located at the leading edge of the heater mat and electrically coupled to the first zone element.