Bathroom Extractor Fan Help

Hopeful_5

The bathroom extractor fan my builder has fitted doesn't seem very good. I have a bungalow with an internal bathroom and the fan is fitted in the ceiling and ducted through an extension roof using flexible ducting (a run of about 10ft). I don't know if the lack of extraction is due to the fan itself or the ducting.

After having read recommendations for humidistats on here I did ask my builder to install a fan with one but he didn't think it was necessary, not worth the extra money, why was I so fussy?, etc etc.

The fan I have got is no doubt just something cheap. I'm going to ask him to replace it with something much better that will work with a long run of ducting and I'd be grateful for any recommendations or advice.

Thanks for any replies.

Hope

ariba10

I had the same problem when I fitted an in line fan in the ducting in the ceiling.

I bought a stronger fan to replace the original, and then decided to put the new one in line with the original.

We now have two fans which gives good clearance.

beefster

Get a bigger in line fan. Easy to fit. Small slot in ceiling ones are not powerful enough with a shower going.

ormus

ive seen two fans in ones with long runs. one fan is half way along the ducting.
a small cheap fan is next to useless in long runs.

ic

For a run that long you will require a centrifugal fan - not axial. If placed inline, it'll be quieter as the fan unit itself will be located up in the loft.

MX5huggy

Get the ducting replaced with ridged, flexible kills fan power.