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swwils
@swwils
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Joined: Oct 2, 2025
Last seen: Nov 27, 2025
Topics: 0 / Replies: 27
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@andrewj some of the JS for the hub certainly suggests this, or at least labeling for 2 OEM fans, maybe it's just the 6 and the 9.

1 week ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@andrewj it's also possible that not all cosy are the same cosy. If I was octopus and doing a rollout like this; I would definitely have A/B hardwar...

1 week ago
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RE: Battery with existing PV - regulations

@batpred The EPS output can be tricky to do to current regs. The old "rcd socket for type 2 only!" doesn't really cut it anymore.

2 weeks ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?

A2A is really good. Simple. Cheap. Great success in other countries. Use it 80% of the year then kick on your alternative source. Even a single casset...

2 weeks ago
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RE: Battery with existing PV - regulations

G99 needed for ac coupled battery. DNO will assume it can export unless it is type tested G100 and installed how the DNO likes to be export proof. Lim...

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

@jamespa/p> Run starts at 11. It didn't do a defrost the blip in the middle is me canceling a HW call.

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

@jamespa it seems to run at max 27L/min until 45C and then ramps down to 14L/min at 60C then stays there at 60C 14L/min. I was absolutely cooking so...

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

I set the cosy 9 to 70C fixed flow today and let it have at it.   Super interesting, when it reached 60C flow it began widening dT instead of...

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

@andrewj Certainly mine cycles alot below 36C, it seems "happier" with the weather compensated minimum flow temperature at 36ºC or above. I think the ...

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

It definitely doesn't have a regular weather curve control algorithm. Unless you "force" it too by setting a room target very high.

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

@jamespa the insides are very well done. High quality compressor and inverter. Such a large monolithic case is also an achievement in itself. Pe...

2 weeks ago
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