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Last seen: Oct 19, 2026
I see what you mean, interesting. It is amazing what we can learn from detailed charts.
It's the initial precipitous fall in LWT that I'm curious about, blue arrow points to it here: The rest of the decline over time is what I would ...
This is why I mentioned epidemiological observational studies, you have no control over the variables whatsoever. The main way you deal with that nowa...
@bontwoody - thanks for the replies. Inline probes should be accurate, but at the same time such a precipitous drop seems most unlikely, given the...
@jamespa - I suspected all along the answer might be 42. Now we have the answer, we can now work out the question, and I think you have phrased it w...
I think there is at least one thing that isn't right in that chart, the sudden precipitous drop in flow temp when the heat pump turns off. That doesn'...
@iwolf - on my installation there are two flexible connectors connecting the heat pump flow and return to the fixed pipework where it passes through t...
It does correlate well already, at least the OAT/energy out are well correlated, that's the basis of the empirical method of determining heat loss. It...
@paul436 - thanks, that would appear to confirm what i thought.
Not sure, but I think that may be the inline filter by the heat pump is blocked. Mine has a quarter turn valve to close of the pipework, and then you ...
@jamespa - this all sounds do-able, and I agree it is worth a try. To cover your various points: The heating was always on (with or without setback,...
I do already have a lot of data. Since late March 2023, I have been collecting data at minute intervals for all of the variables you mention, apart fr...
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Degrees of Separation
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First you need to know how much thermal energy you'll n...
By bobflux , 4 hours ago
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RE: How quickly would you want/expect heat recovery to take from setback?
@toodles Ah, that makes sense. Your using the TRV bo...
By Singlespeed , 4 hours ago
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RE: Renewables & Heat Pumps in the News
Yes, energy seems less of a priority, even if the cost ...
By Batpred , 5 hours ago
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
Come for the low-carbon homes. Stay for George Clarke’s...
By Mars , 1 day ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@razz, as we head into the heating season, I just wante...
By Mars , 1 day ago
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RE: How should the Boiler Upgrade Scheme be reformed?
Not quite, regular A2W heat-pumps need a load of extra ...
By Temperature_Gradient , 3 days ago
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RE: Heat Geek installations: share your experiences
one thing i learnt from reading people’s comments and e...
By Batpred , 3 days ago
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RE: Cooling/heating with one unit
"The way we use A2A on a cheap overnight EV tariff is t...
By mrkfm , 3 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
We have ‘signed on the dotted line’ today for a Panason...
By Toodles , 3 days ago
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
...or it was there and was lost thanks to laziness and ...
By Majordennisbloodnok , 3 days ago
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Bufferless design & control of Chinese air to water monoblock hybrid heat pump in Alberta, Canada
This post is about how I successfully configured a buff...
By Tony.Stolz , 3 days ago
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The installer visited yesterday and suggested the noise...
By JamesChatz , 4 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Your house sounds a lot like mine. 2 surveyors each sp...
By JamesPa , 4 days ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
Thats true only if you do the wrong experiment. Done c...
By JamesPa , 4 days ago
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