It's about 2.8 x 2.5 x 2.3, I should have said it is to deal with the steam from the shower.

No major gap under the door, the wood butcher did a decent job fitting it!
 
Do you want timer type? Does it come on with the lights? Is the bathroom near to bedrooms? And if yes you may want a quieter model if there are light sleepers in the house. What is ducting length and type? Use centrifugal for longer runs of ducting.

In line fans are generally quieter, but can still reverberate across the ceiling. Could suspend it from roof timbers to reduce this. Expect to pay £60+ for a reasonable one.
 
So how do you expect an extractor to work if there is no flow into the room?

So you always cut a vent into the door when you install a fan do you?
When was the last case of a bathroom user suffocating because the fan sucked out all the air?
 
Last edited by a moderator:
So you always cut a vent into the door when you install a fan do you?
When was the last case of a bathroom user suffocating because the fan sucked out all the air?

I think you've missed the point,
An extractor, no matter how powerful, can only extract as fast as it can be replaced in the room.
A higher powered fan in a well sealed room will create a very slight negative pressure in the room but this will hit an equilibrium point where air ceases to flow out and all it is doing is maintaining the negative pressure.

Years ago I did a job where I had to remove a roof vented online fan and replace with a wall mounted fan on the bosses orders as steam wasn't clearing from the room. Then a few weeks later it had to be changed for a bigger fan, yet it still didn't clear the steam.
Eventually they listened to my suggestion and let me political a ceiling grille in the opposite side of the room to the fan, I connected this to the old tile vent from the online fan and then suddenly the steam was being cleared in seconds!
 
So you always cut a vent into the door when you install a fan do you?
When was the last case of a bathroom user suffocating because the fan sucked out all the air?

I think you have missed the point. Whenever I install a fan, I "warn" the client that the door may need shortening to allow airflow into the room.

The poorer the airflow into the room, the less effective the fan will be - then the client will blame you!
 
i have a showeer every xmas, even if i don't need one. the fasn needs to be rated for use once a year.
 
I like the Manrose MF100T, when installed above s ceiling it's virtually undetectable noise wise, I've fitted probably 5 - 10 of them and every time the customer says turn it in then, and j say it is in and running.
 
I like the Manrose MF100T, when installed above s ceiling it's virtually undetectable noise wise, I've fitted probably 5 - 10 of them and every time the customer says turn it in then, and j say it is in and running.
i think my stepdad has bought one to replace the cheap rubbish that the builders installed......

i dont mind doing the odd bit for relatives but there bloody hard work at times
 

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4" In-line Fan
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