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Last seen: Aug 12, 2026
@harrisonc Thanks - if you've read any of this thread you'll have seen I have pretty much the same problem, somewhat improved recently with adjusting ...
It would be useful if you can post back on here how that goes as I too get overheating at cold weather. The "start of the fix" has to do what you are...
Interesting. I don't have that problem, although the fan is quite noisy when it is working hard, but my house is quite susceptible to specific freque...
Well, you know that it is possible to at least attempt to run it purely on WC but that isn't the way Octopus will commission it or, my impression, exp...
@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!
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Degrees of Separation
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