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Last seen: May 29, 2025
@uk_pete_2000 I think we have some misunderstandings here. You previously indicated that you have a passive house (<10W/m2 or ~5kW peak loss) but i...
@uk_pete_2000 I have perused your data again. As far as I can see there is no way that you can efficiently use such a large HP to directly heat your e...
@uk_pete_2000 Sorry, I forgot to say that in my second case of 12 hour heating period, a double size HP would be required i.e. 10kW to deliver double ...
@jamespa I have been quietly following all of this in amazement at some of the statements, especially about over-sized HP’s being more efficient. The ...
@sicky This one is not too bad if you have all the correct data. It is just tedious getting the data and filling it all in as there is a lot of detail...
@editor Copy of information from my first post FYI. This tool is very comprehensive but not for the faint-hearted. "To calculate the heat loss a...
@jamespa I am reposting this due to my revisions being gobbled up by this site. I have tried to remove the confusion and ambiguity caused by my previo...
@jamespa Invoking Occam’s razor in this context does not help. In engineering, there are right answers and wrong answers, not alternative facts. Neve...
I am new to this forum. I am amazed at the breadth of discussion on this topic but have not absorbed everything. There are interesting snippets and so...
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Degrees of Separation
Latest Posts
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I've just finished reading BHPSS, @editor, and I can se...
By Majordennisbloodnok , 2 hours ago
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RE: Heat Pump deployment statistics: June 2026
IMHO its not unachievable, but it wont be achieved with...
By JamesPa , 2 hours ago
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RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 2 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 , 3 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 , 3 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 , 2 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 , 2 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 2 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 , 3 days ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 5 days ago
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