Bathroom Extractor Fans

lperdios

I am moving to a new house that has a very small ensuite shower room. Its currently mouldy so I will be ripping everything out and starting new. I am debating what extractor fan to buy, should it be a dehumidfying type fan or just a powerful one? There are no external walls so it will need to go on the ceiling in to the loft and ideally not too noisy as it is an ensuite. Any advice would be much appreciated.

Emmia

Get the most powerful extraction with a humidstat as the essential feature to reduce moisture build up - the screwfix site allows you to filter for noise and humidstat features.

To warn you though, a humidstat turns the fan on gently whenever moisture goes over a certain level - so it's likely you'll get some noise when the shower is not being used e.g. at 2am when you're sleeping. I'm not bothered by it, but if you like complete silence then you may want to have a switch fitted so you can cut the power to fan to prevent this.

I'd also look at using anti mould paints when you're redecorating such as Zinsser perma white.

Grenage

In-line fans for the loft are better anyhow.  Use rigid rather than flexible ducting and it will be quieter.

I used a fairly powerful ventaxia 150 at the last place and it was decent.  I prefer over-run to a humidistat.

FreeBear

Grenage said: In-line fans for the loft are better anyhow.  Use rigid rather than flexible ducting and it will be quieter.

And make sure it vents to the outside world rather than in to the loft space - Pumping damp air in to a loft will result in rotting roof timbers..

Depending on budget, it might be worth looking at a mechanical heat recovery ventilation system - It would still get rid of the humid air, but it would also extract some of the heat and return it to the building along with some clean fresh air.

grumbler

lperdios said:

 There are no external walls so it will need to go on the ceiling in to the loft and ideally not too noisy as it is an ensuite. Any advice would be much appreciated.

Make sure the hose or the pipe doesn't collect the water condensing in it. It has to be well insulated and, if horizontal, direct the water outside.

Keith_F

Without a doubt, the Hib Cyclone range.
main motor sits in loft so it very quiet. 

Incredible power.
https://www.tapwarehouse.com/p/32600?ppc=true&gclid=Cj0KCQjw3f6HBhDHARIsAD_i3D9FqV_pQf-EBenKJCXU6QJuD6LEEoVu5URjMuie8arI90bVIBqUVsAaAmtEEALw_wcB&gclsrc=aw.ds