Is the residential door of the building facing east or west?

The residential door of the building faces east very well, as the saying goes, it goes smoothly when you enter the door. According to feng shui, the east is more conducive to doors, so purple gas comes from the east, so it is best to face east. If the door of the house faces west and it is exposed to the sun in summer, it will be very hot in the house. Most people will decorate with multiple air conditioners to reduce the suffering of exposure. But it costs a lot.