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AllyFish
@allyfish
Contributor
Prominent Member
Joined: Oct 31, 2022
Last seen: Jun 26, 2026
Profile Activity
Topics: 24 / Replies: 495
AllTopicsReplies
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 years 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...

2 years 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...

2 years 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 ...

2 years ago
Forum
Government Schemes, Regulations, Training, 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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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...

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

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

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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