Air conditioner ventilation openings refer to the exhaust outlets of the indoor unit, which can be mounted on the wall of the unit or placed directly outside of it. They are used to expel hot air from the indoor unit, reduce indoor temperature, and also to introduce fresh outdoor air into the room.

Common types of air conditioning ventilation outlets include double-slat grille outlets and self-hanging grille outlets. Double-slat grille outlets feature two layers of adjustable angle movable blades, with short blades used to regulate the diffusion angle of the air stream and can also be used to change the direction of the air flow; adjusting the long blades allows the air stream to adhere to the ceiling or tilt at a certain angle (when heating). Self-hanging grille outlets rely on the natural下垂 of the grille blades to isolate indoor-outdoor air exchange. When the indoor air pressure is lower than the outdoor, the air stream will blow the blades open to exhaust outward, while outdoor air cannot enter the room.

When selecting an air conditioning vent type, it's essential to choose based on the actual situation and personal preference. Besides the vent type, factors like size, location, orientation, filter installation, and air distribution method should also be considered.