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  • We have some condensation issues in our main bathroom...

    Multiple causes:

    1. Outside wall (1930s house so air gap only?)
    2. Rain shower dispenses lots of water which means lots of steam
    3. Washing machine / condenser tumble dryer in there too

    It's double glazed at least but still...

    The fan is small and runs off the light ring (I assume... As it turns on with the lights).

    Couple of questions:

    1. Can I upgrade it without making a bigger hole?
    2. Will that really make much of a difference?
    3. If I clean out the one I have, will i see a performance increase?
    4. Is it likely the one I have has adjustable timing and will elongating it actually make a difference?

    This is the one I have:


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  • Can I upgrade it without making a bigger hole? < <

    You might find something with a higher flow rate due to better blade design etc. Check flow rates on the fans available. I'm guessing that one is 4"/100mm

    Will that really make much of a difference? < <

    Not sure how much they vary from the one you have.

    If I clean out the one I have, will i see a performance increase? < <

    Of course, but minimal gains etc. etc.

    Is it likely the one I have has adjustable timing and will elongating it actually make a difference? < <

    Does it stay on after the light is switched off? if not you are limited to it only working when the light is on or rewiring it with permanent power. There should be recommendations for the length of time it stays on and lengthening that time should help reduce warm moist air in the room.

  • Are you keeping the door/window open after showering and when washing/drying?

    We have the same issue but it's our own fault as new bathroom but didn't think to run fan off separate switch.

  • It looks like a 4" or 6" fan. Replacements are like for like so just get the same size again

    You can get different ones for different things. There's ones with timers or manual pull cords. One with a humidity stat on would be helpful if you get lots of moisture.

    Our bathroom is always steaming up so we bought a dehumidifyer

  • Using a squeegee on tiles after shower has made a big difference to how damp our bathroom feels

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