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Last seen: Sep 17, 2026
@andbeck Couple of questions and a thought: I cant actually work out in the plot which line is the DHW temperature and which the heat pump flow ...
My first comment is that this is a heroic effort to eliminate variables and illustrates how difficult this problem is. I might suppose that the fact ...
Interesting. Are they getting bunged up do you think, or somehow 'shifting'. I haven't seen them in the flesh but from the photos they look like the...
Thats an interesting comment. Does accuracy matter or is it sufficient that the adjustment (valve authority according to Heat Geek) is reasonably lin...
Fair enough. I confess I didn't listen to the video. Im not sure the use you describe is limited to botched heat pump systems though, as you say roo...
Here in the south of the UK I don't find the need to vary the weather curve but I do switch from 'no room influence' to 'expanded' mode (which acts as...
er,,, but presumably its still a TRV and thus not particularly suitable for heat pumps?
@fleurcules thats great news. My advice is to make sure he demonstrates high temperature operation and if you can note the cop when he does it (diffi...
Great then, you seem to be well sorted. Before I 'sign off' completely I should say that many of my comments above about possible causes no longer a...
Frankly Im not surprised. Please do read my previous post which, following 3 years on this forum and a very successful personal heat pump install, is...
Decades of dirt cheap North sea gas killed the competence of the heating industry in the UK. Just shove in a grossly oversized 30kW condensing boiler...
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Latest Posts
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RE: Heat Pump deployment statistics: June 2026
To my eyes, sat behind all of this is a basic policy ma...
By Temperature_Gradient , 10 hours ago
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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 14 hours ago
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We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 14 hours ago
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RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 16 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
Have you looked at the Nibe website? They list their ap...
By Lizzie , 18 hours ago
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RE: Why are ASHP installs so expensive?
A not unreasonable position and it wouldn’t be mandator...
By AndrewJ , 18 hours ago
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 2 days ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 2 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 3 days ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 3 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 3 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 3 days ago
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RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 4 days ago
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