Electric Unvented vs Thermal Store/Vented Cylinder with Small Stove

[davies69]

Hi,

We currently have a traditional hot water cylinder with an immersion and connection to a multi-fuel stove with a 10k BTU (3KW?) boiler. The DHW is provided by the immersion over the summer and the stove over the winter. We've got a bath and 2 electric showers, and (honestly) no heating in the house other than the stove, and we don't intend to install CH any time soon. The problem is there's never enough hot water to fill the bath, and due to the uncontrollable stove input the hot water is often closer to steam....

The plan was to improve the hot water temperature and flow (mains cold pressure is very good) and replace one of the showers with a thermostatic mixer. The options seem to be an electric unvented with 2 x immersions and lose the boiler from the stove (it can be removed and room heating output improved), or a smallish thermal store with one immersion and keep the boiler input.

Any experience from the coal face would be appreciated, or any alternative suggestions.

Cheers,

Rich

 

[ShaunCorbs]

tbh i would go with a thermal store

but anyone working on the system should be hetas registered

 

[townfanjon]

I would normally go unvented , but it would be a waste not using the stove .
As Shaun says hetas reg needed

 

[davies69]

Thanks for the responses so far. A thermal store was initially my first choice, but as the stove input is pretty small and thermal stores are a few hundred quid more expensive than the equivalent unvented, is the only real benefit of the thermal store not needing a G3 plumber and annual servicing?

Cheers!

 

[townfanjon]

Thanks for the responses so far. A thermal store was initially my first choice, but as the stove input is pretty small and thermal stores are a few hundred quid more expensive than the equivalent unvented, is the only real benefit of the thermal store not needing a G3 plumber and annual servicing?

Cheers!

Basically yes , although they are not expensive to service , to fit one apart from your onsite pressure and flow being adequate your main problem is running the discharge pipe which obviously depends on cylinder location etc etc