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Last seen: Mar 31, 2026
Just for the record here @derek-m and @hughf I re-discovered the brochure below which I think describes the system I have (more or less) - a snapshot ...
Too funny @batalto...in our case, our geometra/ project manager and electrician conspired to order us an ASHP that drew 6kW of power in use...when the...
Hi @derek-m - thanks once again for feedback. Its clear to me now that I'll need to use the offset to adjust the WC curve and thereby produce a differ...
Hi @derek-m, Many thanks for this, most interesting and helpful. So – we have lift-off and I switched the system on last Friday evening (25/11) with...
Hi @derek-m thanks again for reply. Yes we have an ‘outdoor unit’ (‘the big fan’) and an ‘indoor unit’ (‘the big grey box’), and the Altherma ST therm...
Hi @derek-m thanks for this explanation - makes sense and provides ample background for discussions with Daikin at my end. It does sound like the sola...
@derek-m Electricity here is pretty pricey at the moment - 55c for daytime (F1 - Mon to Fri 8am to 7pm) use and 52c for all other times so there's a s...
Hi @hughf and @derek-m - below are some photos of the pipework (the insulation is awful and I'll be re-doing it this winter - promise!) and the top of...
Many thanks @derek-m and @hughf this is terrific advice and background on how this system works which has been bamboozling me for a while. I'll certai...
Hi @transparent thanks for this - yes I mis-spoke about the cold water - it may sound a bit daft but I didn't even understand until relatively recentl...
Hmmm not entirely sure that's something I wanted on my CV...oh well, it is what it is and hopefully it can still keep us warm this winter! 😀
Hi @hughf very interesting comments - I have a very limited understanding of how this all works so please forgive anything I say that seems naive! Wha...
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Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
I am amazed that there is not something out there to me...
By JamesPa , 5 hours 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 , 10 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 , 16 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 , 1 day 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 , 1 day 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 , 2 days 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 , 4 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 , 5 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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