Most likely that is why my projector does not heat up the room... We have 2 4' wide openings to other rooms.Or maybe I misunderstood your statement. If you're just talking about the projector, yes, it's pulling air from the room. What it does next is use that air to cool down the projector, which heats up the air, and spits it back out into the room, continuously. If you don't have airflow in and out of the room, the projector will eventually heat all of the air in the room, which is what you are complaining about. If you allow the room to exchange air with the rest of the house, the projector will have much more air to work with.