A cabin heat discharge system is provided that includes an interconnected series of ductwork channel sections that at least partially surround an engine located within the cabin space of a mobile unit. The series of ductwork channel sections partially surround the engine fan to capture air exhaust blown from the engine. The ductwork channel sections downstream of the engine fan partially surround additional components of the engine and the captured air traveling through the channel sections absorbs radiant heat of the engine components. The series of ductwork channel sections downstream of the engine fan includes an outlet section that discharges the heated captured air outside of the mobile unit.