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AndrewJ
@andrewj
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Joined: Jan 8, 2025
Last seen: May 24, 2026
Topics: 10 / Replies: 204
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

@l2jad I was just thinking all things being equal. Our hot water usage doesn’t really change day-on-day so 1 hour is enough; just wondered if you had ...

2 days ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

@l2jad do you find that the hot water takes longer to heat up with hush mode turned on? I haven’t tried it yet and currently hot water is scheduled f...

2 days ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@swwils mine is mostly off now. Hot water for an hour 02:30 to 03:30 then heating to 21c from 03:30 to 05:30 although in reality it will only come fo...

1 week ago
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A year of running, and summary of experience

I have had my Cosy 9 installed and running for a year on 8th May. My house, to recap, is a Finnish timber frame design, 164sqM, detached over two floo...

2 weeks ago
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RE: Is Traditional Radiator Balancing Tosh?

Which I can empirically vouch for. Further, you may even find, as I do, that thermostatically controlling the system can lead to oddities such as hav...

2 weeks ago
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RE: Cleaning solar panels

Well, turns out a DIY job isn't going to happen. Even on a step ladder with a 8-10m telescopic pole I can only reach the gutters! That's that then.....

3 weeks ago
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RE: Cleaning solar panels

@toodles Good to know. I will give it a go with my telescopic pole and if it works great. I don't know what the cost is per panel, but if it comes t...

3 weeks ago
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RE: Cleaning solar panels

Interesting perspectives. I'm definitely not climbing on a roof so I'll see if I can reach them from a step ladder with a long washing pole and rinse...

3 weeks ago
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Replies: 14
Views: 324
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

To be fair to Octopus customers, it would be better if we could get detailed information from a more official channel and less cryptic source than a S...

4 weeks ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

I take it “a few hours” is just a figure of speech and you’ve had it turned on for some time? Reports seem to be positive but it’s such an odd time o...

4 weeks ago
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RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?

I don’t know how the Aerotherm works so can’t comment on that. Looking at the graph, and as long as I haven’t misinterpreted it, it seems to be showi...

1 month ago
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