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Last seen: Jan 14, 2025
@cathoderay yes certainly the system overall isn't generating energy during the defrost, its spending it on the defrost actions, so its valid to treat...
@cathoderay its not "compressor gate" that is how they all calculate it. The energy generated was 8kwh, thats what the heat pump will report. But the ...
are you sure that it is the HP is underpowered? or is it that your system design doesn't allow the maximum power of the heat pump to be utilised? does...
@cathoderay so I looked at table on page 44 of this , if thats the right unit and document? At -5C you can get 12.5kw @40C COP2.7, 12.0kw at 45C COP2....
@cathoderay do you have the whole table? or a link to it. max is probably the one that matters given you are trying to run it flat out right now. disa...
@cathoderay unless you've got an install that doesn't comply with the MI's in terms of airflow clearances (check the installer guide) , in your positi...
thinking about the installers (and related roles) that I follow , who discuss this subject area on Linkedin, they are largely the good ones I think. I...
@bontwoody can't see anything wrong with your reasoning. As per @kev-m, there is potentially a case that the smaller unit isn't quite enough - but in...
@derek-m maybe thats not the right technical term. I'm just telling you what it does. If you stand by the heat pump its a LOT colder when its running....
I always see a dip in the OAT as measured by the heat pumps own sensor whilst its running. I don't think there's a microclimate. There's simply a mass...
@bontwoody I think the answer is that we are "total amateurs" who really really gave a damn. read every document. watched loads of training and educat...
@hughf here's my (worse than) design conditions day, yesterday, 18th jan, -7C at 0600. HP usage was 69kwh electricity generating 166kwh of heat. ...
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Latest Posts
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RE: Renewables & Heat Pumps in the News
🙂 I assume that would be a step forward from ...
By Batpred , 12 minutes 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 , 2 hours 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 , 3 hours ago
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RE: How quickly would you want/expect heat recovery to take from setback?
That's the issue, those graphs show your heat-pump (in ...
By Temperature_Gradient , 7 hours 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 , 2 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 , 2 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 , 2 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 , 2 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 , 2 days ago
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@bobflux Thank you for your response. I am trying to ...
By RonV. , 2 days ago
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This post is about how I successfully configured a buff...
By Tony.Stolz , 2 days ago
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The installer visited yesterday and suggested the noise...
By JamesChatz , 2 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 , 2 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 , 2 days ago
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