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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: Mar 4, 2026
Profile Activity
Topics: 6 / Replies: 352
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RE: Samsung Gen 6 - Schedules not working

Sorry, not sure I can help. I only use Daily schedules which only apply to DHW. We use a programmable third party room thermostat to control heating O...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DNO export limit problems.

How big is your proposed solar array? I have 7.2kWp array and a 5kW export limit, and it's not overly limiting with a bit of careful battery managem...

5 months ago
Forum
Energy Storage
Reply
RE: Seal the Deal: Don't Let Your Heat Pump Leak Energy

I'll go with the standard grey open cell foam insulation you see indoors (as it's protected from UV), with the normal 45deg cut corners. Surely they c...

5 months ago
Forum
Insulation
Reply
RE: Octopus Cosy Fixed

For our usage, I estimate I may save around £12 during the winter months for Fixed Cosy vs the Cosy Oct 2025 pricing, so not enough of a saving to cov...

5 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Seeking Help for In-Principle Quote to fix a botched heat pump installation by Heat Geek Installer

You are correct that the Samsung docs recommend a minimum system volume of 50L, but note the key word there is minimum. In reality, the system volume ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Fixed

Interesting, but IOF is so much better for us in summer, I will need to calculate if the saving would offset the £25 early exit fee to switch in sprin...

5 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Who's your electricity provider and what's your tariff?

Our region has increased to 14.794p which is a 14.6% increase, notified in a letter from Octopus that states "Energy prices will rise 1-2% for most ho...

6 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Big Changes Coming to Our Heat Pump System

Agreed, and I'm in no way trying to defend poor system design or the use of buffers, just trying to rationalise why some installers choose to use buff...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Big Changes Coming to Our Heat Pump System

3: For retrofits, installers have no clue what existing pipework they are working with, what flow restrictions they may encounter and what head pressu...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS certificate SCOP vs real-world performance

MCS SCOP 3.84 (design LWT of 47C) Actual real world SCOP 3.75 (running LWTs of 32-35C) So despite running significantly lower LWTs, real world SCO...

6 months ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Powerwall 3 or Myenergi or something else?

I think you need to be sure you are comparing like for like. It is true that you can buy a Fogstar 16kWh battery for around £1750 whilst a comparabl...

6 months ago
Forum
Energy Storage
Reply
RE: Powerwall 3 or Myenergi or something else?

Having had a chance to test this now, I can confirm that my Tesla Powerwall 3, whose spec sheet states to be able to supply 185 LRA, is able to supply...

6 months ago
Forum
Energy Storage
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