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Last seen: Oct 17, 2026
@jamespa yes, I'm under no illusions but in some respects, I've made my bed by going with Octopus. I've sort of proved it will work without the therm...
There is a thread here about Octopus Cosy heat pumps - mine is a Cosy 9 with a heat loss of 8.4kW and a 50c design temp at -3.2c. It's worth noting h...
Latest news. I've still been struggling with overheating and no contact with Octopus but yesterday a manager intervened and an engineer turned up thi...
@rikiarn I have the same issue really, although 13 out 15 radiators were changed. Both upstairs and downstairs overheat when the weather is colder (&...
The difference between Octopus (£6,500) and Heat Geek installer (£18,500) was ridiculous - these are after the BUS grant. It wasn't even a complex in...
@jamespa did you mean ... ON a weather compensation curve rather than OR?
JS?? The Cosys are the only HPs that Octopus can experiment on. Are they installing Daikins now, I couldn't tell from their website? &nbs...
A different fan might make the unit less noisy at full chat!
I will wait to see what they say but I'm expecting to have to chase. Service is pretty good except for the usual "we'll give you a call back" shenani...
That would be my worry. If they insist the resolution is to downsize some radiators I may instead have to go back to a thermostat to limit the temp r...
The engineer visited this morning and checked everything over. He agrees that everywhere is too warm but he cannot drop the Cold Water Flow Temperatu...
They certainly commission their Cosys to work like that and I suspect they do it because everyone will understand that operating model. It also uses ...
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Degrees of Separation
Latest Posts
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RE: How quickly would you want/expect heat recovery to take from setback?
I have no idea how the control loop works with the Cosy...
By AndrewJ , 8 minutes 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 , 15 hours 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 , 17 hours 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 , 19 hours 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 , 20 hours 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 , 20 hours ago
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@bobflux Thank you for your response. I am trying to ...
By RonV. , 20 hours ago
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This post is about how I successfully configured a buff...
By Tony.Stolz , 24 hours ago
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The installer visited yesterday and suggested the noise...
By JamesChatz , 1 day 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 , 1 day 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 , 1 day ago
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RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 2 days ago
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RE: Renewables & Heat Pumps in the News
With regards to the BUS grant raid, I gave it more thou...
By ASHP-BOBBA , 2 days ago
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RE: Why are ASHP installs so expensive?
The whole system seems to work on the basis of...
By ian33a , 2 days ago
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