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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Sep 13, 2025
Profile Activity
Topics: 23 / Replies: 473
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Reply
RE: New £200 payment for customers off the gas grid

@morgan that one has me scratching my head. First heard of this scheme on the Martin Lewis programme. Until late October I was off mains gas with heat...

3 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: 17kW Grant Aerona 3 - advice needed for pre-commissioning struggles

Hi @Denevil, OK, the low rate overnight tariff is a good reason to generate HW overnight, if not the most thermally advantageous time. Defrosts are an...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kW Grant Aerona 3 - advice needed for pre-commissioning struggles

Hi @Denevil, just reading this, I'm probably a month or so further on my Grant ASHP system journey, 10kW Aerona3 and 150m2 EPC C house. It's a learnin...

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

@marvinator80 for internal pipework, yes. for external, no. Needs to be thicker wall, minimum 19mm (3/4") and weather/water and UV resistant skin. Som...

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

We get very cold weeks like this 4-6 weeks of the year. When I first started researching ASHP, I realised it would be more expensive than kerosene, my...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: British Gas kicks off price war for heat pumps

Quite a bit of coverage over on LinkedIn about this one. And so the race to the bottom begins. Price driven installs seldom hit the required quality a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

3 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...

3 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...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
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...

3 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...

3 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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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