An induction cooktop appliance includes a housing having an air intake opening and an air exhaust opening, the air intake opening and the air exhaust opening defining an air cooling circulation path, an induction cooktop disposed on top of the housing, electronics for the induction cooktop disposed within the housing, and a vent tube having a first end and a second end, the vent tube being disposed in the cooling air circulation path and configured to segregate air entering the air intake opening from air exiting the air exhaust opening.