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Last seen: Jun 13, 2026
@swwils I believe it is well insulated: it’s a Finnish timber frame house designed to cope with Finnish winters. The basic structure is 1980s technol...
@agentgeorge I’m aware of the process - in fact, it’s been mentioned by @jamespa and @toodles in this thread a few times. The approach requires reduc...
I don’t know how it is implemented but the two temps you select are the end points at -10c and +12c. The WC curve is, as far as people can tell, line...
@agentgeorge They redid the survey and determined the heat loss was 1kW less than original. This also then identified that most of the radiators were...
@swwils I tried that, but couldn’t get the flow temp down low enough to stop overheating.
If the hardware limits what can be done then I don't see what an advanced controls mode could actually do. Currently, it is possible to run as "alway...
Mostly my thoughts although I'm on the fence whether I regret it or not. My other quote was £12k more from Heat Geek so in some respects it's a no-br...
I wonder if there’s been a firmware update recently. It’s 3c outside and the Cosy is quiet which is unusual. It would have been noticeable at this ...
I haven’t tried that but may do so. I (my wife) wouldn’t want it below 21c when we go to bed so that’s my target. Last night, I managed 21.8c so I s...
No idea, the valve is fine, I had it set at 3 and the room is 22.8c typically. 3 should be 20c but….what can I say?? @swwils I guess I don’t care a...
@kevh yes, both ends actually. They have been pretty emphatic about not dropping the Cosy 9 below 36c and I’ve been told by one techie that it can’t ...
No it doesn't: as I commented on the Cosy 9 thread, the flow temps on the Cosy systems can't be lowered enough to deal with oversized radiators and "a...
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Latest Posts
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RE: Heat pump installation quotations
@batpred Excellent, thank you very much!
By sttpd1917 , 25 minutes ago
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Hopefully this will answer your question. To...
By ASHP-BOBBA , 26 minutes ago
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RE: Help me keep the faith with my air source heat pump installation
I would be interested to find out if others do this and...
By ASHP-BOBBA , 34 minutes ago
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Harvest Thermal - ASHP with a smart thermal battery
I thought people here might find this interesting, even...
By springswood , 2 hours ago
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Don't you dare. You just carry on as you are; as @batpr...
By Majordennisbloodnok , 2 hours ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@ragtime27 some rooms in our house only have one place ...
By Judith , 2 hours ago
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@mkz, that's very helpful. Even if Urban Plumber are no...
By Majordennisbloodnok , 6 hours ago
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RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 6 hours ago
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My first question is why bother with the auto balancin...
By JamesPa , 7 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 7 hours ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 7 hours ago
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 11 hours ago
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
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