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Old_Scientist
@old_scientist
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Prominent Member
Joined: Jun 16, 2024
Last seen: Jan 9, 2026
Profile Activity
Topics: 6 / Replies: 315
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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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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 ...

2 years 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...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs

I am so relieved to find this thread and discover that I am not the only person obsessed with this - Like Steve, I have no issue with looking at the d...

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

Yes, we have a 50L volumiser installed, and our radiators can emit the minimum heat output at flow temps of 33-34C, so this is as low as we can go.

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

Interesting @mike-h. When I first looked at Cosy, it didn't appeal and we went with Agile. I'm not sure if they have changed the time slots and the di...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
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