>Unless if the fan is placed by an open window and it pulls in cooler air inside. Which is how many people use a fan, when it's hot out I open the windows in t

>Unless if the fan is placed by an open window and it pulls in cooler air inside. Which is how many people use a fan, when it's hot out I open the windows in the evening and use 2 window fans to pull in the cool air, then close up the house in the morning to keep it cool. I haven't done the math on the COP, but I'm pretty sure it's much better than running the AC. A fan in a room may not remove heat from the room but it can make it much more comfortable at a higher temperature, reducing the need to run AC.