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Last seen: Oct 27, 2026
I suspect it depends on the engineer. I also suspect that they will be predisposed to disbelieve anything that the customer tell them unless they can...
I dont think this is quite right. It is definitely useful to put numbers in, but you have also think about what drives what. In heating, the driving...
All of which is very fair. Im not trying to persuade anyone on this particular matter, just identifying (as much for me as for anyone else) the trade...
I think you are right, there may be, in principle, a small capacity hit either at the heat pump level or because of the max speed through the pipework...
OK at this point I need to post a health warning - I'm not a heat pump expert, I'm just an enthusiastic amateur with a physics degree from 40 years ag...
I don't see why it has to work harder. The energy transferred from house to outside is unaffected by the flow liquid. The energy transferred from r...
or, more to the point, what maintenance is it possible to do to a 50l tank? Check the connections aren't leaking I suppose!
The change is specific heat capacity shouldn't directly affect the performance of the HP. It simply means that the fluid has to flow about 10% faster...
Ok that's good. So you could: Switch the volumiser out of circuit using the valve you mentioned earlier. Take the heads only off about h...
Sorry I don't know definitively the answer to that question. Having said that I think its much, much more likely that the 'black ink' and 'iron part...
No, pipe flushing is not part of the annual service. So far as I know the annual uvc cylinder 'service' is just an inspection and partial test of th...
Defo give Octopus a go but they might not touch your house at present if it doesn't fit their 'model'. I think they are trying to perfect some process...
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Degrees of Separation
Latest Posts
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RE: The good, the bad and the not that great – my heat pump installation
@editor I completely forgot to document wha...
By Burtis , 5 hours ago
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RE: I need help with Ecodan ASHP
@f1p It turns out there have been a solar panel install...
By Andris , 8 hours ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews your installer would be right to say that the...
By GrahamF , 8 hours ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
@trebor12345 That curve looks healthy to me. I woul...
By JamesPa , 9 hours ago
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RE: Tradespeople on Their Phones: What’s Acceptable When They’re Working in Your Home?
Actually, that's a very important point. I've only ev...
By Majordennisbloodnok , 16 hours ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@susannasaunders can I just add to @rob-of-york s comm...
By JamesPa , 20 hours ago
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RE: Aerotherm and weather compensation
These are likely inked. The basic explanation is tha...
By JamesPa , 20 hours ago
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RE: Electrical works for air to air heat pump
agree with above. I have not had extra costs added wh...
By Batpred , 21 hours ago
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Good to hear that you found a solution. Absolutely a...
By Batpred , 21 hours ago
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RE: Are there any comparisons of DHW heat stores around?
@sarahemmm I have done things the opposite way round I ...
By Toodles , 1 day ago
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RE: How will removing the standing charge on gas bills benefit heat pumps?
The BUS grant funding for 2026/27 will run out at the c...
By Rob of York , 3 days ago
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
By Mars , 4 days ago
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RE: How much of your renewable and home setup would still work if the internet went down?
Yes I actually have a copy of a tool that whenever a ce...
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RE: Indevolt Batteries UK Support & Info Thread
@editor Hi, To resolve this, please tap on the A...
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