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swwils
@swwils
Member
Estimable Member
Joined: Oct 2, 2025
Last seen: Apr 26, 2026
Profile Activity
Topics: 0 / Replies: 92
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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...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@agentgeorge mine does switch back

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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 ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@jamespa I would guess it's a deliberate choice due the compressor selection, it's minimum stable compression ratio is probably close when at 34C. A...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@agentgeorge ESP32 since its what I had in the drawer

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Fogstar 15.5kWh upright solution

@batpred I think you probably got the wrong end of the stick with this supplier. Maybe stick to givenergy?

6 months ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

My fogstar seplos battery has been great and the service fantastic. I don't run an active balancer but did match and top-balance the cells. I wrote a ...

6 months ago
Forum
Energy Storage
Reply
RE: Renewables & Heat Pumps in the News

I was asked if I was happy before I was even issued the certificate in a handover pack.

6 months ago
Forum
Renewables News
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@agentgeorge I don't need too because I sniff the modbus

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

Think of it like a dT modulated unit. Since they can offer a tarrifs into a specific unit with say a oversize compressor, it does make sense to aim at...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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