On 22/02/2019 09:01, Andy Bennet wrote:
On 22/02/2019 07:33, The Natural Philosopher wrote:
On 21/02/2019 20:51, NY wrote:
"The Natural Philosopher" wrote in message
...
I don't know how the DHW works. Perhaps a second stage heat pump.
She seems happy with it but the house is now on the market:-)

DHW uses heatpump as preheater then immersion.

So you have to heat a cylinder of water in advance, rather than
having the heat-on-demand of a combi boiler. Yet another nail in the
coffin for the system as far as I am concerned. Having to plan ahead
when you are going to have a bath (or keep the cylinder permanently
hot) is a real retrograde step.

Â*Â*WEell a modern mains perssure tank lose very little heat and since
you are already all electric with heating it loses it inside te house
where its need 9 minths of the year.

And its way better than a combi in terms of hot water delivery,


... and you can heat it overnight on cheap rate electrity. BTW our 220l
vented tank has a heat loss of 78W (delta T not specified). and as you
say that goes towards heating the house anyway.

Sadly in my case it goes towards heating the vented attic :-)


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