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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: Aug 18, 2025
Profile Activity
Topics: 5 / Replies: 199
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RE: HP Cycling, Expected or Undesirable

This is essentially how I have been running my Samsung - FSV #2091/2092 set to option 1 so the compressor can only be turned off by the 3rd party room...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buffer tank in primary circuit?

@roel I also have a 12kW Samsung with the same 50L volumiser, although my volumiser is fitted to the primary return rather than on the primary flow. ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Energy new Cosy tariff.

@toodles Great that Cosy is working out for you. I've not tried the Octopus Compare app, but without the benefit of batteries I find it non-trivial ...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Lower electric tariffs for heat pump users

British Gas are also offering at 14p/kWh tariff for the first year for heat pump usage: Presumably they have a separate billing meter for the ASH...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Eco 4 Scheme - Choice?

We have just had our property updated on the ECO4 scheme, so I will share our experience here for others. Firstly, there are literally dozens of com...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Energy new Cosy tariff.

@toodles In your situation, with batteries, I agree that you have made the right decision - being able to lock in half price electricity at 11p in the...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Samsung Gen6 setting I can't fathom: water outlet heated to 64C.

@mike-h I have been running my Samsung gen 6 (12kW) in Quiet Mode for scheduled DHW cycles for exactly that reason - it limits the power of the ASHP t...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Gen6 setting I can't fathom: water outlet heated to 64C.

Isn't it more efficient/cheaper to heat your DHW with the ASHP with a COP of 3 (300% efficiency) than use the immersion with a COP of 1? Excess sola...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Energy new Cosy tariff.

@johnmo It's a utility hallway - that photo was taken during the installation, pipework is now lagged, and I will be building a closet to house the ta...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Octopus Energy new Cosy tariff.

@mike-h Yes, I was aware it's not ideal, as discussed in this article: The installers insist on a volumiser (a) to ensure the minimum volume is a...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Octopus Energy new Cosy tariff.

Yes, it really is a volumiser (2 pipe tank), and it is located on the primary 28mm return to the ASHP as shown here: so is on the return for both ...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Octopus Energy new Cosy tariff.

Agreed, even a 5kW battery would allow one to charge at 11p and avoid importing at 34p during the peak period, plus it gives added comfort and conveni...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
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