The unit is about to be relocated. I don’t know whether to use the east door or the west door?

The best is the south gate. If it is the east gate and the west gate, then the east gate is better than the west gate. In summer, the east gate gets the sun in the morning. Ximen is basking in the sun in the evening. Generally speaking, there are more northwest winds in winter. Another important point is to see if there are windows on the south side. Those with windows on the south side are better than those without windows. Even if you can open one yourself, it would be good. It doesn't matter if you have the money to buy an air conditioner.