heat batteries.

[missplumb]

anyone seen these, they are still in development for use on district heating, but are available for hot water. Weve taken a single unit which will give upto 100ltrs of water at 60 degrees before the batteries are depleted. i think the technology is still off abit as to get the equivalent of a 250ltr unvented cylinder would require 3 stacking units each the size of a fridge freezer, oh and they are about £7000 each!!!!! but the small units could be a space saver in somewhere with a small ho****er useage.
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