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AllyFish

@allyfish

Contributor

Noble Member

4285 kWhs

Joined: Oct 31, 2022
Last seen: Apr 10, 2025

Topics: 22 / Replies: 461

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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...

2 weeks ago

Forum

Air Source Heat Pumps (ASHPs)

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...

2 weeks ago

Forum

Air Source Heat Pumps (ASHPs)

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 ...

2 weeks ago

Forum

Government Schemes, Regulations, Planning & Organisations

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...

3 weeks ago

Forum

Electricity, Tariffs, Monitoring & Providers

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...

3 weeks ago

Forum

Air Source Heat Pumps (ASHPs)

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...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

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...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

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...

1 month ago

Forum

Solar Photovoltaic (PV)

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...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

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)

RE: Grant Aerona 3 Help please - ECO4 grant

Video on how to check basic user info on Grant standard controller:

2 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Grant Aerona 3 Help please - ECO4 grant

Hi @powysperson, first, if you have solar + battery and an SMES2 smart electricity meter + ASHP then get yourself signed up to a variable rate import ...

2 months ago

Forum

Air Source Heat Pumps (ASHPs)