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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Apr 29, 2025
Profile Activity
Topics: 22 / Replies: 463
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RE: Renewables & Heat Pumps in the News

No surprise the Telegraph has jumped to their predictable hasty conclusion. The subject of grid supply and demand balancing and grid resilience is a c...

2 days ago
Forum
Well & Truly Off The Grid
Reply
RE: The Great British Heat Pump Quiz

That was fun, thank you @editor. 85%, which is just as well after 35years in the HVAC industry. Some careless answers on my part, and maybe a couple o...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Database of heat pump performance data?

@jamespa yhey probably are, as EN 14511 prevails in the UK and EU. That said, it was the COP data at identical A&W temperature combinations that w...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Database of heat pump performance data?

I would be very wary of manufacturer's published SCOP data. One very common brand retailed in the UK using Japanese badged up R32 ASHPs has SCOPs that...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are MCS are finally improving (some of) their guidelines?

The update of MCS 031 has been heavily criticised by many of the better and higher SCOP achieving installers over on LinkedIn, etc. MCS 031 update is ...

1 month ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Octopus Cosy 6 launched

Oh dear, someone majorly goofed at Octopus. They've credited me back about a year's worth of bills today. Bumping my account credit from £375 to £1568...

1 month ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Grant Aerona fine tuning advice needed

Hi @stopbar, it's s difficult balance. Trial and error in large part. Every home is different. Pure weather compensation control is good, but not pe...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT

Sorry, yes, 2105. OOPS! If I recall the unit circulates water if the heating is scheduled to be on, but simply doesn't heat the circulating water if t...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT

Hi @damonc, parameter 2015 is the maximum outdoor air temperature corresponding to minimum outgoing water temperature. Default setting is 20degC, in y...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solar Power Output – Let’s Compare Generation Figures

A bit of an overcast start to the year for my 3.6kW array, fully south facing not shaded. 153kWh in January 123.3kWh in February, but comparable to th...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: ASHP and heating issues in new build house

I think your issue here may be infiltration, especially as you say the heating performance deteriorates when the 3 storey building is subject to windy...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona 3 Help please - ECO4 grant

And one for checking Grant Aerona weather compensation settings. (You may need to join the FB group):

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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