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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Nov 30, 2025
Profile Activity
Topics: 23 / Replies: 490
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Reply
RE: Rate the quality of your heat pump design and installation

😆 😆 😆 Greg Jackson might like it, but not everyone wants a bright purple waste bin on their patio.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Heat rises, a phenomena well known, 'stratification', but strangely not accounted for in multiple storey building heat loss sizing estimates. Actually...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

EDIT: Ian's covered most of this, he's got quicker fingers! But my thoughts as per his.... I think you've got a great understanding @tobyg of the to...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

This is the crux of it @derek-m. I've just come off a call with my colleagues in Oslo. Right now it is -13degC and 74% RH, somewhat typical winter w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

Yes, at -3degC target LWT should be 45degC, but tends to never get above 40degC, leaving a shortfall of heating duty and requiring supplementary secon...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

I can't comment on the calculations your installers have prepared, which I presume include for all ECO4 upgrades including internal wall insulation. T...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Totally agree @mikefl. The way Grant runs the CH and DHW is dumb, with no intelligence between the two. It's basic S plan stuff from 40 years ago. The...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson this is great news. 😀 Those little temperature probes are very handy, accuracy is probably +/-1degC. They certainly help with understanding ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Issues with 6.5kWh Growatt battery – Shinephone app says system is offline

No further questions m'lad 😉

2 years ago
Forum
Energy Storage
Reply
RE: Issues with 6.5kWh Growatt battery – Shinephone app says system is offline

@transparent let's keep it simple. You're overthinking it mate! The OP here has Cosy Octopus and wants to run, for as much as possible, their future A...

2 years ago
Forum
Energy Storage
Reply
RE: Issues with 6.5kWh Growatt battery – Shinephone app says system is offline

The Growatt SPH5000 inverter will support 2x Growatt 6.5kW batteries. Max inverter output is 3kW at 240V AC 1 phase, which will cover most of your ste...

2 years ago
Forum
Energy Storage
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@toodles You were unlucky. I got the same 4 digital sensors over a year ago and all batteries are still going strong. Great devices across the low los...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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