On 28/05/10 16:42, Pyriform wrote:
I've decided these are a good idea, and I'd like to fit one. The trouble is
that the only suitable products I've found using google are from US
companies, designed for 110V. Does anyone know of a UK supplier for this
sort of thing?

[For anyone who doesn't know what I'm on about, a whole house fan is a
fairly powerful fan that vents hot air from the house into the attic space
(and thence outside), and draws cool air in through open windows etc. The
idea is that you run it when the house is too hot, and the outside
temperature is significantly cooler - typically to cool things down at
night
after a very hot day.]

How about a number of parallel units: axial fan, 4" ducting (rigid where
possible, flexi[1] at the end for any fiddly bits?

[1] Can be got in round and rectangular form.

I'm using this method to vent an islanded bathroom to the soffit over
the front door (being a straight joist run). If you are only venting to
the loft (to exhaust via the eaves) then you'd only need short duct runs
to allow the fans to go somewhere sensible and perhaps away from being
over the bedroom to reduce noise.

You also have the option to vent via more ductwork directly outside.

I got my ductwork from BES. I'll look up the fan if you like, but they
are not uncommon. You can get fairly subtle vents in a number of
finishes (white, brown, chrome) for the bedroom ceiling end and soffit
end (if required).

--
Tim Watts

Hung parliament? Rather have a hanged parliament.