Toilet low level extractor fan

[MortarThePoint]

Is there any reason why you shouldn't have a low level extractor fan for a toilet? I imagine it's good to have it high in steamy rooms, but that doesn't apply. High level is crowded in ours due to a high level cistern. Would be easy enough to have the extractor fan at around 300 - 500mm off the floor.

[TonyT]

Generally it was always the furthest point from the bathroom door, up high..

 

[TonyT]

On the ceiling?

[MortarThePoint]

11 hours ago, TonyT said:

Generally it was always the furthest point from the bathroom door, up high..

 

I guess it makes sense to draw air across the room from the door. If not in the ceiling, I don't see a reason for it to be at any particular height other than too low could be a vermin risk.

[Onoff]

16 hours ago, MortarThePoint said:

Would be easy enough to have the extractor fan at around 300 - 500mm off the floor.

 

Ar$e level! 👍

[Dave Jones]

use a wall hung frame with built in bog extraction.

[PeterW]

It’s there for removal of water vapour and heat rises hence why they are mounted high up. Without it you may get mould at a higher level.

[Conor]

Air is drawn in UNDER the door, so all you'll be doing is extracting fresh air from the hallway.

[Nickfromwales]

48 minutes ago, Dave Jones said:

use a wall hung frame with built in bog extraction.

That is supplemental extraction, not fundamental extraction. Would go WITH the main extractor, not replace it. 

[Dave Jones]

28 minutes ago, Nickfromwales said:

That is supplemental extraction, not fundamental extraction. Would go WITH the main extractor, not replace it. 

yup

[Nickfromwales]

4 hours ago, Conor said:

Air is drawn in UNDER the door, so all you'll be doing is extracting fresh air from the hallway.

Could always put a transfer grille above the door and leave very little gap at the bottom. Then airflow would be from top to bottom, as best as. 

[MortarThePoint]

4 hours ago, PeterW said:

It’s there for removal of water vapour and heat rises hence why they are mounted high up. Without it you may get mould at a higher level.

In a bathroom sure, but also in what's just a toilet?

[Nickfromwales]

6 minutes ago, MortarThePoint said:

In a bathroom sure, but also in what's just a toilet?

Depends if it has a window really, because of water in the cistern and running water / damp towel from hand washing in what is a very small compartment.

In this situation, any extraction should suffice afaic, but doing as I stated above would get the best results from a low down extraction point as the incoming air would be coming in up high creating at least some  turbulence within that compartment. 

[MortarThePoint]

Part F of Building Regs:

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1045918/ADF1.pdf

[MortarThePoint]

But looks like the window could count as an alternative so extractor fans not actually required for toilets (without bath or shower). I'm a but surprised so would need double checking with BCO. If extractor not required you could add one in a non compliant position.