The present invention relates to an oven (1) comprising: a main body (2) which comprises a cavity (3) for cooking the food with radiant heat; a door (4) for opening/closing the cavity (3); a control unit which comprises a printed circuit board (5); and a cooling unit (6) for cooling at least the door (4), wherein the cooling unit (6) comprises a first air passage (7) which is disposed into the door (4), wherein the first air passage (7) comprises a first air inlet (8) for admitting the ambient air, and a first air outlet (9) for discharging the ambient air.