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Last seen: May 24, 2026
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 ...
@agentgeorge Do you run on two zones then? I believe it is building regs that requires a TRV on every radiator except the one that is in the room wi...
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