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AllyFish
@allyfish
Contributor
Noble Member
4198 kWhs
Joined: Oct 31, 2022
Last seen: Mar 14, 2025
Profile Activity
Topics: 22 / Replies: 456
AllTopicsReplies
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...

2 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...

2 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> ...

2 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 ...

2 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.

2 years ago
Forum
Energy Storage
Reply
RE: Safety precautions - lithium solar PV storage batteries indoors

@dak51 interesting. Sadly the talk of BritishVolt's planned EV battery manufacturing plant at Blyth now has a very hollow ring. I have a 6.5kWh Grow...

2 years ago
Forum
Energy Storage
Reply
RE: Cosy Octopus - New ASHP tarrif

OK, first full monthly billing period with Cosy Octopus, and, combined with a 6.5kWh battery charged at cheap rate periods, it has saved me 25% compar...

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

Grant make the assumption that higher leaving water temperatures have a higher delta T between flow and return, compared to lower temperatures. For th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Energy launches heat pump as cheap as a gas boiler

The economy of manufacturing scale comes into it, with Octopus' backing, RED will have more purchasing power for the major ASHP components. I'm person...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Boxing in your cylinders.

@marvinator80 good on them. I wish my installer hadn't now, as it adds nothing and probably robs efficiency. It may be coming out one day. I don't nee...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Boxing in your cylinders.

@marvinator80 WOW! Absolutely fantastic. Very tidy.Out of interest, did your installer fit a low loss header and secondary pump or not? I don't see on...

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

That's pretty good. I'm sitting around 920kWh for the last rolling month, but that's mains power. My solar PV contribution has been around 150-180kWh ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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