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Joined: Jan 11, 2026
Last seen: Feb 3, 2026
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Topics: 0 / Replies: 5
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

I think the Cosy 9 and 12 have the same dimensions? If so I’m guessing the fan has a higher rpm on the 12.

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

if you are on Facebook there is a cosy Heatpump group. A director frequents the group and is quite active, so will definitely react to reports of n...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

@sukh-sukh-sukh-swwils I have a Cosy 6 and it’s quieter than my old gas boiler, but it does have a particular frequency when it ramps up to its max w...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

I’ve heard a few reports about the Cosy 12s being very noisy. One from an engineer. Octopus may have a problem on their hands.

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solis inverters S6-EH1P: pros and cons and battery options

@batpred I started reading this thread thinking I would be reading about you configuring predbat based on your user name. 🤣 is there any re...

2 months ago
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Energy Storage
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