Best extractor fan for bathroom ?

[Talay]

Some are £20 whilst others are £100+ and I don't know how to differentiate between them.

So can anyone recommend a fairly quiet extractor fan with humidistat to take out quite a lot of steam generated after a sequence of hot showers (worst case scenario).

Links would be great.

Thanks.

 

[HERTS P&D]

You need to look at the M2 output and the noise level.

Have a look at the site below:

http://www.screwfix.com/search.do;j...TWnM10h5r!1688107110?fh_search=extractor+vans

Andy

 

[Taylortwocities]

This was discussed very recently.......

http://www.diynot.com/forums/electrics/most-powerful-bathroom-extractor-fan.310238/

 

[Talay]

Any thoughts on this: http://www.i-sells.co.uk/kair-heat-recovery-extractor-fan-12vac-selv-humidistat-48

KAIR HEAT RECOVERY EXTRACTOR FAN - 12VAC SELV - HUMIDISTAT

 

[riveralt]

You want something like this.
http://www.fastlec.co.uk/airflow-ic...m&utm_content=cx_content&utm_campaign=cx_name
This is the basic model and you add modules to your taste so if you want to add the humidstat module you can like here.
http://www.gil-lec.co.uk/products/E...ow+Icon+Module+-+Humidistat+&+Timer/251050528

 

[Talay]

You want something like this.
http://www.fastlec.co.uk/airflow-ic...m&utm_content=cx_content&utm_campaign=cx_name
This is the basic model and you add modules to your taste so if you want to add the humidstat module you can like here.
http://www.gil-lec.co.uk/products/E...Module+-+Humidistat+&+Timer/251050528[/QUOTE]

I had seen these or at least the smaller ones and sort of discounted then as "quirky" with extra moving parts to go wrong. Have you used / seen these in action ?

 

[riveralt]

I had seen these or at least the smaller ones and sort of discounted then as "quirky" with extra moving parts to go wrong. Have you used / seen these in action ?

Quirky?
Unless you mean the fact that the vent closes like an iris and therefore keeps backdrafts out.
I have fitted one of these to my utility room.

 

[Talay]

I had seen these or at least the smaller ones and sort of discounted then as "quirky" with extra moving parts to go wrong. Have you used / seen these in action ?

Quirky?
Unless you mean the fact that the vent closes like an iris and therefore keeps backdrafts out.
I have fitted one of these to my utility room.

Yeah really. I'd have thought the best place to stop a backdraft was at the point of entry, namely the external wall. Unless you are talking about this providing an additional barrier, which I appreciate.

 

[Talay]

I see some fans are centrifugal. Is this the best design for in the wall extraction with a total room to outside depth of perhaps 40cm ?

 

[riveralt]

Yeah really. I'd have thought the best place to stop a backdraft was at the point of entry, namely the external wall.

You can stick what you want on the external wall.

Unless you are talking about this providing an additional barrier, which I appreciate.

No the iris is designed to act as a barrier - in most fans that have such 'barriers' it turns out to be a flimsy piece of flexible plastic that fits over the fan motor tube.

Centrifugal fans are normally used for extracting longer distances - most axial fans will cover the range 0 - 3metres. Centrifugal fans can cover up to the 8metres

 

[Talay]

So centrifugal fans are more powerful ? which would appear better as it could extract more vapour before it hit the window or cold areas and turning into condensation.

I appreciate the iris acts as a barrier but you would surely have a barrier at the outlet would you not ?

 

[riveralt]

So centrifugal fans are more powerful ? which would appear better as it could extract more vapour before it hit the window or cold areas and turning into condensation.

I appreciate the iris acts as a barrier but you would surely have a barrier at the outlet would you not ?

I'm not sure how else I can help you - you have all the information you need to make an informed decision.

 

[EFLImpudence]

I appreciate the iris acts as a barrier but you would surely have a barrier at the outlet would you not ?

Why, where is the wind going to go?

 

[Talay]

I appreciate the iris acts as a barrier but you would surely have a barrier at the outlet would you not ?

Why, where is the wind going to go?

The external vent is forced open by the flow of air, sealing closed after the unit is switched off. If there is no externally closed vent, then surely all manner of items could enter and would only be prevented from entering the bathroom by the iris closure. If that were the only barrier, it would appear insufficient.

 

[Talay]

I'm not sure how else I can help you - you have all the information you need to make an informed decision.

Thanks for your help.

I suppose my inquisitive mind would rather understand why something is right rather than simply accept that it is. I'd also rather understand why something is wrong for the same reason.

A few steps forward but not quite enough knowledge just yet.