Bathroom overhead shower extractor fan

[Destination]

I need to replace a bathroom extractor fan in a family members house.
Do these thing tend to be of similar sizes, the current model looks affixed to the ceiling over the shower.
I assume there is tubing attached to the top of it, but the fan is dying, and making large amounts of noise which sound like rattling bearings.

It is linked to the lights and has a set delay for a few minutes after the light goes off, is this a function of the fan itself?

Which model would people recommend for quietness,, and for simplicity of a straight swap?

 

[Destination]

Have you got a loft? I think the loft fans ducted to the bathroom avoid standard bathroom wiring regs.

This is a loft fan, ducted in above the shower.

Wondering on recommendations on a quiet replacement.

 

[Destination]

Ah the manrose things are like the ones i have i my own house.
So i would just use a blank vent panel on the roof, and connect this in line to the ducting, spliting both sides into place.
Need to get into the loft and see what way the current ducting is, and if i can easily splice it.

 

[Destination]

Anything from vent axia. Lots to suit your budget.

Will give a look also, thx.

 

[Destination]

Okay, going to bump this thread, i installed an axia fan, which was recommended here, it was very quiet, it shift the air, and with its timer, the bathroom is always clear of any humidy. It has the blowback thing to stop cold air coming in also.
It is vented upwards, through the roofspace, and the air expelled through a tile in the roof.

Now that it is very cold, i am aware of what seems to be condensation building up within the venting ducting.
I am very concerned that this will drip or indeed run back down into the electronics of the fan itself, and on inspection, there seems to be the start of this happening.

Is there a way to avoid this, to syphon condensation away from the ducting?
What would people recommend.
The ducting is about a metre long, and goes relatively straight up within the roofspace.

 

[Destination]

Hmm, i was thinking the same, this isn't my house but my parents house, this bathroom hasn't been in much use until relatively recently, so althought the house is built maybe twelve years, this wasn't discovered until now?

 

[Destination]

One option is to install a condensation trap in the vertical riser - that way any condensation that occurs and runs down the sides of the pipe is caught and then needs to be plumbed into or vented. That way the water from the trap flows under gravity down the 2-5deg down angle and out of the roof into a waste pipe or out of a pipe under the eaves so it's expelled clear of the walls.

Like this: http://www.vent-axia.com/range/condensation-trap.html

You then put the fan below the condensation trap so the water flows out before hitting it.

If the condensation is dripping inside without touching the walls that trap isn't going to help. The problem of why the condensation drips can be rectified by a small angle so that the condensation is forced to hit the side of the pipe..

Ah-ha this is an idea, but it states not to be used with flexible ducting. Unfortunately there is flexible ducting in place.
So it is either replace the ducting, or move the exiting ducting so it vents out under the eve, and insulate it.