I have 3 extractor fans in my house - 2 have no backdraught prevention
and therefore let a lot of cold air in, especially when the wind is in
the wrong direction. One had air operated shutters in the duct but they
flapped about noisily in windy weather, so I changed them for an outer
grille with air operated flaps. That makes a racket too.

Does anybody know of a domestic 4" or 6" extractor fan for wall fitting
that has effective, silent backdraught prevention?

TIA

Steve

In article ,
"Steve" says...
I have 3 extractor fans in my house - 2 have no backdraught prevention
and therefore let a lot of cold air in, especially when the wind is in
the wrong direction. One had air operated shutters in the duct but they
flapped about noisily in windy weather, so I changed them for an outer
grille with air operated flaps. That makes a racket too.

Does anybody know of a domestic 4" or 6" extractor fan for wall fitting
that has effective, silent backdraught prevention?

This one seems to have a solenoid-operated shutter:

http://www.tlc-direct.co.uk/Products/BGGXC6.html

Rob Morley wrote:

This one seems to have a solenoid-operated shutter:

http://www.tlc-direct.co.uk/Products/BGGXC6.html

Won't the shutter be operated mechanically, by the pullcord?

Rob Morley wrote:
In article ,
"Steve" says...
I have 3 extractor fans in my house - 2 have no backdraught
prevention and therefore let a lot of cold air in, especially when
the wind is in the wrong direction. One had air operated shutters
in the duct but they flapped about noisily in windy weather, so I
changed them for an outer grille with air operated flaps. That
makes a racket too.

Does anybody know of a domestic 4" or 6" extractor fan for wall
fitting that has effective, silent backdraught prevention?

This one seems to have a solenoid-operated shutter:

http://www.tlc-direct.co.uk/Products/BGGXC6.html


Looks nice - any 4" models with electrical operated shutters? I can only
seem to find them on 6" models, which would look too big in my small
bathroom. I've seen 4" models without electrical operated shutters - but I
assume these may clatter in the wind.

Thanks

David

In article , "Lobster"
says...
Rob Morley wrote:

This one seems to have a solenoid-operated shutter:

http://www.tlc-direct.co.uk/Products/BGGXC6.html

Won't the shutter be operated mechanically, by the pullcord?

I hadn't considered that - I've only ever encountered fans with
solenoid or airflow operated shutters. I assumed from the
description that this would be the former, and qualified it with
"seems to have".

Thanks Rob, that looks like the sort of thing I need. It's a little
bulkier than my present one, but maybe that's the price you have to pay
to get rid of this annoying problem. Shame they don't seem to do a 4
inch one too


Rob Morley wrote:
In article ,
"Steve" says...

I have 3 extractor fans in my house - 2 have no backdraught prevention
and therefore let a lot of cold air in, especially when the wind is in
the wrong direction. One had air operated shutters in the duct but they
flapped about noisily in windy weather, so I changed them for an outer
grille with air operated flaps. That makes a racket too.

Does anybody know of a domestic 4" or 6" extractor fan for wall fitting
that has effective, silent backdraught prevention?


This one seems to have a solenoid-operated shutter:

http://www.tlc-direct.co.uk/Products/BGGXC6.html

David Hearn wrote:

Looks nice - any 4" models with electrical operated shutters?

Vent-Axia? I have a Vent-Axia VA100 bathroom fan which has a shutter
operated by a 'thermal motor' (expanding capsule heated by a ceramic PTC
disc). It's very quiet in operation and the shutter opens and closes
slowly, not with the clunk you get from a solenoid. This was installed
~12 years ago though, so might not still be available. And the thermal
motor failed a couple of years ago and had to be replaced - no great
trauma there though, I got a spare directly from V-A without difficulty
and with change from ten quid.

--
Andy