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HarryRea
@harryrea
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Eminent Member
Joined: Apr 30, 2025
Last seen: May 14, 2025
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Topics: 0 / Replies: 18
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RE: Yes, the "zoning with ASHP" topic again...

James, thanks again for your thoughtful and persistent questioning — this kind of interrogation helps clarify the strengths and limits of any approach...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

Hi James,Thanks again for your detailed thoughts. I appreciate how precisely you're interrogating the claims and looking for practical value — so here...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@johnmo That’s a clever use of defrost behaviour to guide handover — and it sounds like you’ve fine-tuned it well for your setup. Just for reference, ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@johnmo, I can see what you mean by the heat pump switching over and back between cooling and DHW, but I was referring to the heating season when you ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@jamespa, following on from your examples — here's how I’d approach each:---a) 100 m² New Build (3kW @ -2°C, typical spec):In this case, structural zo...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

That’s a great question, James, and it goes right to the heart of what sets structural zoning apart from conventional approaches like LLHs or buffer t...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@jamespa I want to clarify that my hybrid example was posted specifically in response to Johnmo’s system description. I would not recommend it univer...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@johnmo Thanks for sharing the full schematic, Johnmo. That’s a helpful layout, and it shows just how much manual logic and layout planning are neede...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@johnmo Thanks, I appreciate your detailed walkthrough. It’s always helpful to see how experienced users approach hybrid setup challenges. I agree ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@johnmo Thanks, Johnmo — fair points as always. I agree that unnecessary complexity has plagued many modern heating setups, mainly where buffers ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Yes, the "zoning with ASHP" topic again...

@heatgeek Thanks for your post and for articulating a very real scenario that reflects the kind of system we’ll be seeing a lot more of: low flow rate...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Yes, the "zoning with ASHP" topic again...

Thanks, James — that’s a really encouraging and fair response, and I appreciate the open-minded way you've approached it.Yes, you’ve summarised it wel...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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