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Last seen: May 6, 2026
Hi Jo. I've been on Cosy a few weeks now and, like you, have been wondering about this. I've got 10kWh worth of batteries so that is really helping me...
Thanks @iancalderbank. Yep, the calc is, er, somewhat sensitive as you say but as an approximation it's OK for now. I'll look into the metering you de...
Hi @iancalderbank, and sorry for the delay. Turns out there are more important things to do than fettle the heat pump 😂. The primary side pumps are ...
Hi @iancalderbank, and thanks for that. I'll have a look at my pump situation when I've got a bit of time later. Just to answer your point about the...
Hi @iancalderbank. I've done some (crude) monitoring today with the system stable, looking at heat being generated and measuring secondary side flow a...
Thankyou @toodles, I am feeling quite pleased with myself I must admit. 50mm Kingspan all round but they are still fixed to a cold stone wall sucking ...
Hello @alanb. Wee heated lean-to enclosure now built and in operation. I've a wireless thermometer that's telling me it's 2.1°C inside (it's about -...
@iancalderbank Thanks, that's really helpful!
@iancalderbank Joule Samsung have just told me it's not possible to alter the 'slave' to remain on whilst the master goes into defrost. I thought thou...
@iancalderbank Yep, they both have separate controllers (currently linked) but can be reconfigured to run individually, controlled from a single run s...
Thanks @iancalderbank. You're not wrong about the hard work. We clearly don't need 24kW but have made some improvements to the house since the system ...
Thanks @iancalderbank, that's helpful and good shout re the bigger pump. I'll look into that. I might need to start lifting a few floorboards as well!...
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Degrees of Separation
Latest Posts
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RE: Octopussy cosy 6 experience
currently property has an old more than 20 years oil bo...
By paultheheating , 1 hour ago
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A small sample of the current Hydrogen pipework and sto...
By Jeff , 10 hours ago
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
I'd count air/air in with hybrid systems and in fact ev...
By EtchedPixels , 11 hours ago
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RE: Aerotherm and weather compensation
The principal cause of inefficiency if a heat pump is n...
By JamesPa , 12 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 13 hours ago
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RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
By bobflux , 16 hours ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
By mk1234 , 19 hours ago
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RE: Marvel Heating liquidation
Insolvency is brutal. I have experienced three, two as...
By JamesPa , 23 hours ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@etchedpixels Agreed, just a thought for others. I am...
By Watcher , 2 days ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 2 days ago
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Coming back on subject... A shortened version of the ...
By Transparent , 3 days ago
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RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 3 days ago
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RE: Free app: run the immersion / heat pump from Growatt battery & solar surplus – no Home Assistant
Please bear in mind, everyone, that in order to use thi...
By Majordennisbloodnok , 5 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis Thanks for posting this and Im so pleased you ...
By JamesPa , 5 days ago



