In message , Tony Bryer
writes
In article , Christian
McArdle wrote:
Some are, some have an integral unvented cylinder inside the box too.

The only one I've seen is the Keston Duet, but there isn't an overall box.
You can see the separate cylinder, boiler and framework. Are there any other
makes? I would have thought that an integrated heat bank would generally
make more sense for a unit designed down to a small size in a common casing,

You mean like a Potterton Powermax?

http://www.potterton.co.uk/products/...owermaxHE.html


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geoff