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Last seen: Sep 20, 2026
In fairness I would expect the COP to change, because you are working the heat pump harder in setback (which is the whole basis of the argument that s...
@cliffhanger suggest you reread my post above, I edited it after you looked at it. I found a video which helps a bit, but Grant do seem to have come ...
@cliffhanger I have a pump with the 'factor' curves and, once you understand them they are easy to operate, easier in fact than the '4 point' system...
As others have implied, the latter (this is the most important thing to understand about heat pumps). In short the procedure is: Set all your...
Definitely - I didnt realise that they had a stake in the house in warehouse. Octopus also have access to 'big data' from their installed heat pumps...
With his permission I did some analysis on the plots of 'similar days' posted by @cathoderay a few posts ago. The most important thing that comes o...
The heating curve specifies a higher LWT at low OATs, and a lower LWT at higher OATs. Thats the whole point of the heating curve - it varies the LWT ...
It is indeed a good question. The purpose is always said to be to ensure that there is sufficient water in the system to yield sufficient energy to...
Mine are also upstairs because I upgraded them before I realised how much the heat pump industry overestimates house losses. Still not a problem alth...
I confess I had to look up 'ceritus paribus', but having done so it is the problem with almost anything to do with domestic heating and heat pumps (po...
The deviations can be handled by a) the lockshield valve. this restricts the flow rate through the rad in question which increases the deltaT for ...
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Degrees of Separation
Latest Posts
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RE: Next steps on my ASHP journey: Radiators and Pipework
@jamespa since going back to bed and reading again this...
By Singlespeed , 5 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 21 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I wouldn't be too concerned about the design ...
By Rob of York , 21 hours ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 22 hours ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 24 hours ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 1 day ago
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RE: Why are ASHP installs so expensive?
Posted by: @batpred There´s another aspect that coul...
By Rob of York , 1 day ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 2 days ago
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RE: Home energy storage & battery register
1 fox ess lv5200 batteries, plus 2 more waiting to be i...
By Jimcub , 2 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 2 days ago
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My feed of random industrial auctions turned up this au...
By Prunus , 2 days ago
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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 3 days 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 , 3 days 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 , 5 days ago
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