Extractor fan installation

[elektrik]

Hi,
Having some dilemma where to place an extraction fan in my ensuite as looks like "static" vent (old hole above the window) and opening a window is not enough to take a moisture out, especially during a winter.
Attached a sketch of bathroom and noted where the black dots starting coming out, so want to make sure to put it in right place.
Thanks

 

[Wayners]

Above shower.
Air comes in either below door or through window and out extractor

 

[opps]

If directly above the shower, you may need a low voltage fan, or an inline fan if there is space to fit one.

 

[Madrab]

Whilst an extractor may help - the best thing you can do, once the shower is finished, is open the door a bit and keep the window open until the room clears and cools down, natural ventilation is the best approach. Have the window open whilst showering to allow the steam a path to escape. Also if there is a radiator, have that on, the convection will help clear the humid air from the top of the room.