On Wed, 23 Nov 2005 18:01:06 +0000 someone who may be Peter Parry
wrote this:-

It is nothing like double glazing. Double glazing brings with it a
number of other advantages

Something I said in my posting.

Solar water heating has no advantages at all over any
other form of water heating,

Really. So not burning gas or electricity and thus reducing
greenhouse gas emissions is not an advantage? Not running a boiler
all the year round is not an advantage? Fascinating.

as well as making no economic
sense is visually unattractive

I suspect we are getting to your real motives now. Do you think that
a panel built into a roof www.imaginationsolar.com is unattractive?

and also a very unreliable heating source.

Owners of modern systems seem happy with them, perhaps you are
thinking of some of the earlier systems (still sold, sadly) with
pre-heating cylinders and the like.

Solar water heating will never make sense in the vast majority of
situations in the UK.

As others have said, mass production and installation in new
buildings will even change the economics. Meanwhile the other
advantages remain.

Perhaps you would like to study the recent report on sustainable
heating systems by the Sustainable Development Commission. This
gives the best view on the subject recently.

--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54