I live in a tiny apartment that probably only circulates the air within the apartment itself. The system sucks air from one spot and throws it out from the ven

I live in a tiny apartment that probably only circulates the air within the apartment itself. The system sucks air from one spot and throws it out from the vents at all places. To force fresh air to come inside I keep the door of my room open and open the window by 3 inches. Turn on the HVAC. Thus all the air from my room is sucked and because of the pressure difference fresh air gushes in. This works for me pretty well.