Dear Experts,
The extractor in my en suite has never been very effective; I have to leave it on for most of the day to clear the moisture from a morning shower. I've considered various possible reasons for this:
- There's a fair length of flexible duct to the outside (about 4m I think).
- The fan itself is possibly not very powerful.
- There is insufficient gap under the door for replacement air.
But while I've been pontificating about the root cause, the fan has been working hard and has now died. Now that I have it off the wall I can see that it is a Silavent SDF100HT; it's a 100mm axial fan whose spec claims 80 m^3/hr at zero pressure and max pressure of 16 Pa.
With it off the wall I can also see that the flexible duct immediately goes around a sharp bend.
So, I need to replace it - presumably with something more powerful. But maybe actually more power isn't going to help if the problem was really the duct or the lack of gap under the door.
Also this is a mains powered fan. Should I replace it with a low voltage one? It is at ceiling level above the bath/shower and easily within reach while I am standing under the shower - I think zone 2. So IIUC mains is OK, but maybe 12v is "best practice"?
Thanks for any suggestions.
Phil.
The extractor in my en suite has never been very effective; I have to leave it on for most of the day to clear the moisture from a morning shower. I've considered various possible reasons for this:
- There's a fair length of flexible duct to the outside (about 4m I think).
- The fan itself is possibly not very powerful.
- There is insufficient gap under the door for replacement air.
But while I've been pontificating about the root cause, the fan has been working hard and has now died. Now that I have it off the wall I can see that it is a Silavent SDF100HT; it's a 100mm axial fan whose spec claims 80 m^3/hr at zero pressure and max pressure of 16 Pa.
With it off the wall I can also see that the flexible duct immediately goes around a sharp bend.
So, I need to replace it - presumably with something more powerful. But maybe actually more power isn't going to help if the problem was really the duct or the lack of gap under the door.
Also this is a mains powered fan. Should I replace it with a low voltage one? It is at ceiling level above the bath/shower and easily within reach while I am standing under the shower - I think zone 2. So IIUC mains is OK, but maybe 12v is "best practice"?
Thanks for any suggestions.
Phil.