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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: May 1, 2025
Profile Activity
Topics: 5 / Replies: 147
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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...

10 months 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...

10 months 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...

10 months 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...

10 months 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...

10 months 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...

10 months 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 ...

10 months 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...

10 months 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...

10 months 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.

10 months 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...

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

@steve81uk We are all radiators, no UFH so do not benefit of the thermal mass associated with the latter. Further, our new internal wall insulation (I...

10 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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