Bathroom Fan question

[G0JLB]

Hello,
I have been refitting my bathroom.
I now need to fit a extract. I have purchased an inline fan that will sit in the oft.

My question is when to fit the fan vent in the bathroom.
The shower will be over the bath. The bathroom is approve 2.5m x 2.5m.

Ignoring the state of the wall and other things, work in progress! please see the pic below.
where is the best place for the fan. Either directly above the tap end of the bath where the shower head will be, between the light and wall.
Or between the two middle lights, which would be in the centre of the room (left to right) and about in the centre of the bath.

Once the shower is fitted, there will be a glass panel and of course the wall will be tiled.
Oh, the door is on the right wall. Behind me on the right in the pic.

Any thoughts. Their seems to be so many conflicting opinions.

Cheers
John.

 

[Koolpc]

Over the shower/bath. Furthest point from door...

 

[Justin Passing]

Yeah it's FLOW you need.
Make sure you have somewhere the air the fan tries to extract, can be replaced through - usually from the rest of the house. Hence often the door, but not if it seals.
I've seen people put ever larger extractors into bathrooms which achieved nothing.
An inlet built into the door is the most obvious to me, though I've seen an inch cut off the bottom. Ugly.

 

[Notadecor8ter]

I'm doing my bathroom too. I've put mine half way over the bath but if i probably did this again i'd do it in the far end corner near the shower end.

Bear in mind distance to the outlet from the hole, you'll need it on higher which will be noisy.

Also recommend using solid UPVC piping not flexi to improve flow.

 

[Harry Bloomfield]

My question is when to fit the fan vent in the bathroom.
The shower will be over the bath. The bathroom is approve 2.5m x 2.5m.

Usually best fitted as a compromise between - opposite corner to the incoming air source (gap under door), but also near to moist air source. Idea is to have flow end to end, across the room, avoiding stagnant areas.