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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: Flow temperature & weather compensation. Impact on efficiency

@tim441 this is really useful info and a great find. Your experience of converting from oil to ASHP mirrors mine. I'm only 3 months into the journey h...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buying a house with an ASHP – what to look out for and what questions to ask?

@derek-m Grant UK in my case. By their own admission, they 'make it easy' for tradesmen used to fitting gas boilers to fit ASHPs. But that does not ma...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buzzing noise from UFH manifold

Maybe a bit of wear and tear? Bleed the system of air, it's not something you want in the system. I have one TRV that quietly 'sings' when it modulate...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Buying a house with an ASHP – what to look out for and what questions to ask?

@abernyte "If it is the manufacturers agents then at least you know it was correctly installed and setup." - you would hope so, but... We've seen mu...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buzzing noise from UFH manifold

Wow! ASHPs need to deliver more flow than conventional fired boiler heating systems, as they operate a much lower delta T supply and return temperatur...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Install a Grant Aerona 13kW instead of Mitsubishi Ecodan 11.2kW?

Hi @kitkad, I have a Grant Aerona 10kW installed since Oct last year. It struggled a little in the December cold snap, mainly due to the time it was s...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: No heat in radiators since heat pump failure

Radiators that are only getting warm at the bottom only sounds like they are full of air. Easy to check that one. Has the Ecodan got either a manual f...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

A cylinder should last more than 6 years. It could have had a manufacturing fault, but the picture seems to suggest it corroded from the inside out. B...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

You weren't tempted by the Grant integrated cylinders then? They come at a premium, but look rather smart./p>

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

Bad news and good news. We have about 500litres of oil in our tank, which I'm gravity dispensing to a couple of neighbours below my house c/o a long...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Cosy Octopus - New ASHP tarrif

@transparent you make some very valid points. OK, I was hasty. I have crunched some numbers, and looked more in detail at the Octopus Cosy tariff prod...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The Seven Deadly Sins of bad ASHP install

Wow, 60degC flow temperature. There must be artificial intelligence there at work as there's no human intelligence. Great that you were able to fix it...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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