Go for a vented heat bank, not a thermal store, much better than an
unvented cylinder.

http://www.heatweb.com
http://www.range-cylinders.co.uk (to th thermal storage)

I'll take a look.
Chris


Right I've been looking at the sites that you gave me and could see the
difference at a glance, something that the brochure from Telford didn't
(doesn't) show :-)

So in reality; what do you see as the practical day to day advantages of a
thermal store system over a standard mains pressure cylinder?

What are the relative costs, in materials only?


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