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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Sep 15, 2025
Profile Activity
Topics: 23 / Replies: 473
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RE: Poor location for ASHP, how much of an issue is it with respects to efficiency?

It's a pi$$ poor location for the ASHP, there will be an efficiency penalty. The Grant installation manual is a copy of Chofu's Japanese detail. The '...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing an immersion heater into a hot water cylinder

Are you looking to provide an extra 3kW of water heating capacity on occasion Mars @editor? The Grant LLH can be used purely as a 11.5l volumiser. It ...

3 years ago
Forum
DIY
Reply
RE: Noise/ Planning Expert

Hi @ericdo. Noise is a difficult subject. MCS 020 noise assessment guide is a rough estimate tool for installations to check, on paper, dB(A) theoreti...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: replace large outdoor unit with smaller one

55m2 is a very small heated area, a 5kW unit would provide 90W/m2, which is at the higher end of the 65-85W/m2 'typical installed heating load' for a ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Smart metre installation – seamless or a potential nightmare?

AFAIK, SMETS2 2nd generation smart meters are able to share data between suppliers. Each energy supply company will partner with a 3rd party smart met...

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Smart metre installation – seamless or a potential nightmare?

It was straight forward for me. External metre box, my then supplier OVO installed the smart meter. I was pleasantly surprised that, even though it wa...

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Electricity price predictions

Pop a tablet mate 😉

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: 17kw Grant Aerona heat pump not performing

@mike-patrick I have the same Grant Aerona 10kW unit. You can used the controller to access some real-time data, but it's approximate and rounded. Tha...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

Oh dear, that's a worry. The Grant engineer doesn't know how the Chofu/Grant ASHP works. It has a fixed speed/head curve pump, flow rate is constant r...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity price predictions

@jeff thank you. The above might just as well be carved on the tombstone of the Government BUS scheme when they quietly scrap it later this year./p> ...

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

@sunandair Derek is bang on. More flow on the secondary side than the primary means cooler return water from your radiators mixes with primary heated ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Safety precautions - lithium solar PV storage batteries indoors

It's worth noting that the destructive failure tests in the video were on battery cells not encased in any housing or enclosure.

3 years ago
Forum
Energy Storage
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