If the room only has one window and the door is closed (isolating the room from the rest of the house) then your best bet is option 2 (one intake, one exhaust). This should exchange the air better than the other options because the fans wound not have to overcome the pressure of blowing into/out of a sealed container.
How do you install a window fan horizontally?
Set the window fan horizontally in a double-hung window opening and vertically, with the left side of the fan situated at the bottom of the window opening, for a slider window. Close the window against the fan. The bottom of the window should set against the window fan's flat top.
How do you install a window fan in a sliding window?
https://www.youtube.com/watch?v=3jZUdfxinJU
Should you put a fan in front of a window?
Because fans don't actually make the air cooler but simply redistribute the air around a room, open a window or door opposite the fan, when you have the fan facing in or out of the window, which allows the air to circulate through the room and, even if the air outside is warm, the fan may create a cooling effect
Can you put a window fan in a sliding window?
Bionaire® window fans come with patented Slider Safe® extender panels, which are designed to provide stability in the vertical position used with a slider window. Window fans can be installed either vertically or horizontally.
How do you put a fan in a crank window?
https://www.youtube.com/watch?v=cLH7j0p0oWs
Can an exhaust fan be installed in a window?
A window can be a good choice of location for an exhaust fan as they are generally located opposite the door. With any bathroom exhaust fan your aim is to create a good cross flow of ventilation, allowing for the greatest amount of air circulation possible.Mar 4, 2014
Do you need an exhaust fan if you have a window?
The answer is generally yes. Residential bathroom ventilation is almost always required by any municipality, whether that ventilation is coming from a window or a fan. A window used for bathroom ventilation must be at least three square feet and should be able to open at least halfway.Nov 6, 2017
Does window fan really work?
Window fans are especially effective when used in pairs in two different windows: one to draw cool outside air in from the shady side of your home, and another to push hot indoor air out on the sunny side. But the tests proved our picks in the fan guide are far more powerful air circulators overall.