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Last seen: Jan 3, 2026
2025 energy total: 7.4mW produced, 5.4mWh exported, 3.0mWh imported.
For unoccupied rooms when I am home, I do use setback temperatures on the TRVs. When I am not at home at all, however, I turn the heating off entirely...
Yes, there is definitely scope for heat pump controllers to become much more efficient with better automation. The best solution until that h...
I am a little sceptical of this, not least because, in an old house like mine, the insulation between the rooms and other rooms is not much different ...
I have automated this decision. I have a heat pump with weather compensation, but had noticed that it was coming on in the early mornings when the tem...
Can I clarify - is the LSV the manual balancing valve? That would not be much use to me, as there are not rooms that I always want to be colder: rathe...
@toodles Your use case is indeed very different to mine, and much closer to the COP optimum, I expect. I agree that comfort is relevant to efficiency:...
I was originally contemplating a solar thermal installation last year. However, I decided in the end to install solar PV instead together with my heat...
I have been using Agile since last October. Like another poster here, I use Home Assistant to make the most of it, automatically heating my water at t...
My system installed in July 2024 has produced 6.4mWh in 2025 so far and produced 2.2mWh in 2024. Details on my Enphase public page here:/p>
I do not think that a 300l cylinder is too big for a two person household. I live in a 1 person household and have a 250l cylinder, which is just abou...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
It's an enticing idea, but the problem is knowing the o...
By cathodeRay , 30 minutes ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 3 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 9 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 23 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 24 hours ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 1 day ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 3 days ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 4 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago
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