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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Jun 18, 2025
Profile Activity
Topics: 22 / Replies: 468
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RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs

Yes, this! Thermal mass is key. Ancient civilisations knew a thing or two about using solar reflecting lighter buildings, natural ventilation for cool...

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: ASHP + UFH, no circulation pump

@pie_eater I don't know the Daikin Madoka product, but having had a quick look on-line, it seems it's a simple binary [digital on/off] thermostat comp...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Cutting Out. Hot Water fine.

Great to know you've made good progress @martyj76, and ruled the pump out. The two port valve could well be faulty, it might be a fault with the valve...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP + UFH, no circulation pump

@pie_eater different manufacturers have differing accuracies of COP data, some are just considering the refrigeration compressor, some are total unit ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP + UFH, no circulation pump

Beware the OEM COP 'vanity data' - most if not all heat pump controllers give very flattering [for flattering read exaggerated] COP data. True measure...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Bad COP? Long Pipe Run on Cosy6 Saga Continues.

With the ASHP installed in a neighbouring street it's going to struggle with heat loss & hydraulic resistance. Clearly no-one had done any proper ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Hi there @bajj, you've cracked it I think with setting parameter 21 41 to 2degC. UFH will have a very slow hysteresis response as the mass of the floo...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Cutting Out. Hot Water fine.

This is strange @martyj76, if the unit was installed by a Grant G1 installer, and has been annually serviced by a Grant G1 service engineer, it will b...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Who's your electricity provider and what's your tariff?

E.ON has launched their Cosy Octopus copy tariff product, 'E.ON Next Pumped' with 2x3hr low rate periods, 4am-7am & 1pm-4pm, just like the origina...

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: How to make me regret installing a heat pump

@wanttobegreen sure, 2x6.5kW. Which gives a useable storage capacity of about 12kW. For the majority of the winter we can charge 9kW into the batterie...

8 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: Oh Dear NESTA!

Andy's assertion that anyone with batteries can power their home in a storm [implying they can draw from the batteries when the grid is out] betrays h...

8 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: How to make me regret installing a heat pump

@wanttobegreen as per Toodles' advice. The Solar PV batteries in winter coupled with Cosy electricity tariff are a game changer. 85% of our electricit...

8 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
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