Horizontal DHW tank?

[Alan Ambrose]

Sorry for asking so many questions recently.

 

I'm a bit height challenged 😄. More importantly, the little attic I plan to put the DHW tank is too (1.6m at the inside ridge). Any reason why I shouldn't use a horizontal tank e.g. :

 

Tempest horizontal indirect hot water storage cylinder ? 1.75m long x 0.65m high for 300L.

 

[Alan Ambrose]

[JohnMo]

No as long as you can get up and into it's final position. Then insulate everything really well.

[Alan Ambrose]

Ah thanks. Reporting back, there are a few other manufacturers but none seem to have an energy rating better than 'C'. They're all about 2m long by 0.55m diameter for 300L.

 

Edited 10 hours ago by Alan Ambrose

[JohnMo]

32 minutes ago, Alan Ambrose said:

Reporting back, there are a few other manufacturers but none seem to have an energy rating better than 'C'.

Most cylinders aren't much better that C. You can get A rated ones, but the cost premium is huge. So why bother? If keeping water a 50 degs or lower the losses are pretty small anyway. You are likely to loose way more heat by poor pipe install/insulation (or lack of) and not providing thermal current stops by correct pipe orientation.