Advice on best shower extractor fan

John317

Hello folks, looking for some advice on what the best type of shower extractor fan to get for a small bathroom that appears to have slight moisture issues with traces of small amount of mould on the ceiling, the window always be open but not helping much, are the basic extractor fans any good? Or the ones with a built in light? Many thanks in advance.

indie armada

If its an upstairs bathroom, try to use an inline fan.
These generally run much quieter as the fan is not directly connected to the ceiling.
Brands to look out for are Xpelair, vortice and vent axia.
A typical small bathroom would need a 4'' fan and ducting to suit, but fitting a fan might not solve your problem if you dont have a vent to allow air in to circulate.

nathan184

I bought this one:
http://www.ebay.co.uk/itm/MANROSE-MF100S-IN-LINE-FAN-STANDARD-EXTRACTOR-MIXEDFLOW-/260811228180?ssPageName=ADME:L:OC:IE:3160
and I'm very pleased with it. Not cheap but better quality than anything I saw in any DIY/trade shop locally.

I have a bungalow so I connected this to a standard 4 inch vent directly over our shower. The fan is hanging from the roof timbers so there is no vibration passing down to the ceiling. The bathroom mirror doesn't fog at all unless someone has a very long shower.

indie armada

The vortice punto inline ghost fan, code 11101, which is the timer model would cost approx 47.50 plus vat.

the Deta 4840 inline fan, of similar design would cost approx 36.58 plus vat.

Personally, i've used the Deta a number of times and never had a problem with them, even though they are at the cheaper end of market.

Most electrical wholesalers will keep various brands and types off the shelf,
the manrose fan linked in the above post i would put in the same price bracket as the Deta.

nathan184

You want to check the cubic metres per hour value. The manrose one I linked says 245 m3/hour [will be a bit less with ducting & bends]

The vortice punto and Deta 4840 are around 80-90 m3/hour. Might be fine depending on the size of your bathroom. I think you'll want 6-8 air changes per hour in a bathroom. If you need help calculating it let me know.

mark71

I am facing the same problem and have been looking at S&P Silent 100 Design fan. Apart from being very quiet (26.5 dB), it also looks good:

http://www.solerandpalau.co.uk/product.jsp?PRODUCTID=470&CATEGORYID=41

Anybody has used it?

John317

nathan184 wrote: »

You want to check the cubic metres per hour value. The manrose one I linked says 245 m3/hour [will be a bit less with ducting & bends]

The vortice punto and Deta 4840 are around 80-90 m3/hour. Might be fine depending on the size of your bathroom. I think you'll want 6-8 air changes per hour in a bathroom. If you need help calculating it let me know.

Thanks for your help, its for a bungalow as well that I have, have you an outside air vent installed as well? I would prefer to buy the full kit together besides buying various items seperate, would you know of the best kit to get a fairly reasonable price but don't want any of these cheap ones that will not do the job. Many thanks all of you for your help.

nathan184

I bought everything apart from the actual fan in my local DIY shop. Any standard 100mm [4 inch] ducts and attachments will be fine. You'll need:

• External Fascia vent cover
• Internal Bathroom vent cover
• 2 lengths 100mm duct
• Fan
• Cable ties to attach the ducting to the fan and vent covers

To get the duct into the attic from the outside I drilled a 4 inch hole in my fascia, attached a long length of cable to the end of the ducting and pushed loads of the cable up into the space. I went into the attic and used a long hook thing to catch the cable and pull it and the duct up into the attic space. Just be careful not to tear holes in the duct and you'll be fine.

When drilling the hole in the fascia you might have to do some trial holes to figure out where your roof timbers come down so you'll have space to fit the duct in. If the fascia is flexible you'll figure this out by pushing it and seeing where it doesn't bend.

Suspend the fan from your roof timbers with some rope to avoid awful vibrations through your whole house.

It wasn't an easy job for me, I'm glad to help someone avoid the mistakes I made

John317

nathan184 wrote: »

I bought everything apart from the actual fan in my local DIY shop. Any standard 100mm [4 inch] ducts and attachments will be fine. You'll need:

• External Fascia vent cover
• Internal Bathroom vent cover
• 2 lengths 100mm duct
• Fan
• Cable ties to attach the ducting to the fan and vent covers

To get the duct into the attic from the outside I drilled a 4 inch hole in my fascia, attached a long length of cable to the end of the ducting and pushed loads of the cable up into the space. I went into the attic and used a long hook thing to catch the cable and pull it and the duct up into the attic space. Just be careful not to tear holes in the duct and you'll be fine.

When drilling the hole in the fascia you might have to do some trial holes to figure out where your roof timbers come down so you'll have space to fit the duct in. If the fascia is flexible you'll figure this out by pushing it and seeing where it doesn't bend.

Suspend the fan from your roof timbers with some rope to avoid awful vibrations through your whole house.

It wasn't an easy job for me, I'm glad to help someone avoid the mistakes I made

Thanks for your help that will help me a lot just have to locate a fan I might go with the one you mentioned