The term "fan" in this context refers to a specific type of electric fan that is used in conjunction with an air conditioner. When electricians use the term "fan" in front of an air conditioner, they are most likely referring to a separate electric fan that is positioned in front of the air conditioning unit, not the internal fan of the AC itself.
The reason for using an additional fan in front of an air conditioner is to help distribute the cool air more effectively throughout the room. This setup is often employed in situations where the air conditioner's built-in fan may not have sufficient power to circulate the cooled air to all corners of the space. By placing a separate fan in front of the AC unit, it helps push the cool air out into the room, ensuring better airflow and a more even distribution of the cooled air.
Using an extra fan can be particularly useful in larger rooms, spaces with poor air circulation, or when there are obstacles blocking the direct path of the air conditioner's internal fan. The supplemental fan helps improve the overall cooling efficiency of the air conditioning system, making the room feel cooler and more comfortable.
It's important to note that not all air conditioning setups require an additional fan, as modern air conditioners are designed with powerful internal fans that can effectively circulate cool air on their own. However, in certain situations where better airflow is needed, adding an external fan can be a practical solution.