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Harriworld
@harriworld
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Joined: Feb 3, 2026
Last seen: Feb 17, 2026
Topics: 0 / Replies: 13
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

I had a Cosy 12 fitted on 9th Jan and had a Grundfoss (red) pump fitted in landing cupboard with the buffer tank. I complained about the loud buzzing ...

2 months ago
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