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Octopus Cosy Heat Pump Owners & Discussion Thread

 
Air Source Heat Pumps (ASHPs)
Last Post by Mars 2 hours ago
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 AndrewJ
(@andrewj)
Estimable Member Member
Joined: 10 months ago
Posts: 63
Topic starter 23/10/2025 12:37 pm  

I'd like to discuss how you find it, how you run it and so on.


This topic was modified 2 hours ago by Mars

   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 3621
23/10/2025 4:32 pm  

Great idea. Let's turn this into the go-to thread for all things Octopus Cosy heat pump. It's a really popular model and sharing real-world experiences is the best way for everyone to learn. Share it all.

  • The Good: How efficient have you found it? How is your home comfort?
  • The Bad: Have you faced any issues or quirks?
  • The Setup: What temperatures do you run it at? What's your flow temp and how is your system configured?
  • The Cost: How has it impacted your energy bills compared to your old system?
  • Any top tips you've learned for getting the most out of it?

Tagging a few members we know have a Cosy to get the ball rolling: @agentgeorge and @wreckguru. If there are any other members with a Cosy heat pump, please reply and I'll update the roll call list. 


This post was modified 2 hours ago by Mars

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