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Best place for extractor fan?

Discussion in 'Plumbing and Central Heating' started by Ian H, 18 Jun 2018.

  1. Ian H

    Ian H

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    My bathroom is like this and the shaded area would be the easiest place to put it due to a loft room above.

    There is an RSJ parallel to the window 500mm into the room.

    Where's the best place for it?

    IMG_8881.JPG

    Thanks
     
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  3. on an external wall :D
     
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  4. JohnD

    JohnD

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    furthest from the door, so that the replacement air sucked under the door will push the warm moist air towards the extractor.

    the wall at the bottom of the pic.

    Showers make the most steam

    If you can't suck from above the shower, then the bath corner is the best you can do.
     
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  5. Ian H

    Ian H

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    There is only a bit of external wall above the toilet, there are bedrooms either side. The tiles are hard porcelain too so not sure how hard it would be to core drill them.

    I could go above the shower somewhere near the head, maybe just outside the screen?
    IMG_8882.JPG
     
  6. JohnD

    JohnD

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  7. JohnD

    JohnD

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    very hard, and I think your core will go blunt.

    However you can use a diamond wheel to cut a square out of the tiles, that you can core inside. The fan body should be big enough to hide the square.
     
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  9. Charlie George

    Charlie George

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    Is there a void in ceiling? you could use a ceiling fan.
     
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  10. endecotp

    endecotp

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    Definitely inside the shower compartment,

    Anywhere else and it will just draw air in under the door and straight out through the fan without changing any of the damp air in the shower.

    Note that this makes it a more restricted location electrically.
     
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  11. Ian H

    Ian H

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    The ceiling is 2350mm high
    The ceiling is 2340mm and the fixed head a bit lower.

    So from your link I read:

    'The height of zone 1 and zone 2 are limited either by the horizontal plane corresponding to the highest fixed shower head or water outlet, or the horizontal plane lying 2.25 m above the finished floor level, whichever is higher.'

    If I mount it on the ceiling it will be outside of these Zones?

    The ceiling joists are 8x2's at 400centres so I could go into a void in the room above then out over the bedroom through the side of the house. I guess I'm better with a slight fall where it goes over the bedroom? I'd be using some 110 or 160mm underground drain pipe.
     
  12. JohnD

    JohnD

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    if you can put it above the ceiling, you can use a ducted inline fan, which can be much more powerful than the ordinary 80cu.m/hr bathroom fans, and surprisingly quiet. Better fit a trap in the floor above for access.

    For example this one is a good make
    https://www.tlc-direct.co.uk/Products/SLTD160.html

    there are cheaper brands, such as manrose. Look at air throughput, in cu.m/hr, and at noise, in db, before choosing.

    My preference is for one that comes on with the light switch and has a run-on timer, as people often don't bother turning on fans if they have to make a conscious effort.
     
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  13. Anstiss Ltd

    Anstiss Ltd

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    You can get extractor s that replace light fittings.

    They still have the light but it's vent is round it.

    So you could replace that spot you have in the ceiling almost above the shower.

    They use an online fine in the duct
     
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