Flextherm thermal batteries

[Jilly]

https://flamcogroup.com/uk-en/catalog/buffering-and-water-heating/thermal-batteries/flextherm-eco/flextherm-eco/groups/g+c+p+a+view

 

Has anyone got any comments, experience etc of this system, please?

 

[Nickfromwales]

They look a lot like rebranded Sunamps?

Same with Fisher Future Heat iirc. 

Edited August 10, 2021 by Nickfromwales

[ReedRichards]

Many people have a hot water cylinder in their airing cupboard.  This too is a thermal battery.  The advantage of thermal batteries like the Sunamp are that they are more compact, for a given amount of stored heat, than a tank of hot water.  The disadvantage, last time I looked, is that they are more expensive.