When your fan is facing out the window it blows hot air out of the room which his replaced by cold air from outside.
Fan placement to cool room.
Fan placement place inward blowing window fans on the cool sides of your home that see lots of shade.
However fan placement matters.
If it s really hot you may like the fan to blow directly upon you.
Position the fan so that it points towards the opposite wall unobstructed by large objects.
Placing a fan in a room will disrupt that balance and can force the cooler air to go where you want it to be.
A fan will not cool a room unless the outside temperature is cooer than the inside temperature and the fan used to move the cooler outside air into the room.
Other than that just experiment an see where the fan makes you feel most comfortable.
Box fans placed in or near windows can help draw in cool air from outside or pull warm air out of a room depending on how they are placed.
If the room is cooler than outside close the door.
It s best if you have.
By placing the fan near the opening and not in the opening we increase the effectiveness of the fan considerably by creating a bit of a vortex.
Place your fan so that it faces the opposite wall from where most of the activity takes place in your space.
The sensation of air speed.
If the temperature is cooler outside the room blow the air into the room with the fan either in the doorway or just outside it to get the cooler air into the room.
If the blades face the window screen the fan helps pull.
If they are the same temperature it won t matter.
In this case you want to get the air in the room blowing on you.
As the cold air comes in the temperature will drop.
Try to work with the prevailing wind direction for more cool air.
This will push the cooler air towards the wall where it ll bounce off the wall and back into the room mixing with the hotter air to eventually cool the room.
Depending on your room size setting a fan in a corner may be a good option as more of the room can be covered evenly.
Place the box fan inside the house about 3 to 6 from the window facing outdoors and turn it up as high as it will go.
If you live in a single story home place all inward blowing fans on one side of your home and all outward blowing fans on the opposite side.