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 Post subject: bathroom fan
PostPosted: Mon Jan 14, 2019 11:47 am 
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hi

this might not be for the electric forum but as im getting a spark to fit it it may be.

i need a bathroom extractor fan, i dont have one at the moment. the spark suggested an inline fan, he said he could find one or i could.

looking on screwfix this one looks ok but it says its a shower fan kit - does that make any difference at all? the bathroom has a shower over the bath. i like this one as its the whole kit and its on offer.

https://www.screwfix.com/p/manrose-in-l ... _container

then i saw this which is a general bathroom fan according to the title but it doesnt come with ducting etc and its alot more ££.

https://www.screwfix.com/p/vent-axia-ac ... -fan/53730

any thoughts on whether the description matters? or should i pay more for the better extraction rate?

thanks

mark


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 Post subject: Re: bathroom fan
PostPosted: Mon Jan 14, 2019 11:54 am 
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The first fan extracts 110 cubic meter of air per hour while the second for large bathrooms extracts twice as much.


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 Post subject: Re: bathroom fan
PostPosted: Mon Jan 14, 2019 5:49 pm 
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yartin wrote:
The first fan extracts 110 cubic meter of air per hour while the second for large bathrooms extracts twice as much.


They do indeed claim those figures, BUT it can only suck out what comes in.

I am saying that unless you have the door open or a vent put in the door you may as well have the small one.
Extractor fans do not suck, they move,
So if you put one out side and measure its flow rate it will be what they claim it is.
Put one in a bathroom with the door shut it will struggle to get anywhere near the said volume, simply because the only air that can get in will be under the door or any cracks or open windows.

That is why if you do have a fan in the bathroom and it all gets steamed up it "instantly clears" when you come out, because you opened the door.

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 Post subject: Re: bathroom fan
PostPosted: Mon Jan 14, 2019 6:16 pm 
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How big is the bathroom ?

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