I personally use both. I've found that a fan makes temperatures feel like a few degrees lower. However, having a fan in my face all day dries my skin and often

I personally use both. I've found that a fan makes temperatures feel like a few degrees lower. However, having a fan in my face all day dries my skin and often gives me a stuffed nose/stuffed throat. I only have a portable AC since in France AC for habitations is very rare.