Last seen: Oct 6, 2025
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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we have a 7kW Valliant which has been running quietly a...
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RE: Ecodan ASHP Low COP and Unstable Compressor Frequency
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RE: Bosch CS5800i 5kW - Experience So Far
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
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RE: Confusion over Octopus Tariffs
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RE: New Fogstar 15.5kWh upright solution
I can't get any of those URLs to work...... even if I r...
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RE: Who's your electricity provider and what's your tariff?
@technogeek Yep, the same here. Toodles.
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RE: Maximising Home Automation: Integrating Octopus Energy & More
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RE: The Hidden Secret to a Successful Heat Pump: Pipe Size Matters
@jamespa Yes that post.
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RE: Faulty Clivet heat pump out of the box
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RE: Grant 13kW Aerona3 - issues getting zones to temp
50l LLH install would have introduced a shedload more a...
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RE: Help me keep the faith with my air source heat pump installation
@agentgeorge it has got 2, the other bleed screw is the...
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I too felt the podcast was useful but think it could do...
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Putting a 30 cm. radio controlled wall clock on Freegle...
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@nickhorne Unfortunately not. We take the "normal" IOG ...
By HCas , 2 days ago
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RE: Mixture of copper and plastic CH pipework. Will it be ok, or need changing?
In principle yes. Some heat pumps (I think including D...
By JamesPa , 2 days ago


