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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Jul 20, 2025
Profile Activity
Topics: 16 / Replies: 2631
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RE: buffer/volumizer cupboard space eater, do i need one?

Not sure this is precisely what happens or how the control loop works. What I observe on plots I have seen (including mine) is that the flow temperat...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

I honestly dont know. I think there were two questions 1. Is 5C somehow critical - answer no 2. Does it matter if you have designed for ~5C ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

So this is fairly simple and there is no need for anyone to get prescious about their current position. We all learn by being challenged and hopefull...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

Welcome. If you provide some more information about the property and anything you have already found out I'm sure you will get some helpful ideas.

5 months ago
Forum
Introductions, Forum Rules & Updates
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RE: Heat pump's integral circulator pump

Thanks for the clarification. I am also neither an installer nor a heat pump designer! Just an enthusiastic homeowner with a background in physics a...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

Ok thanks. Why is 8C ideal (and why is 2C a problem?)

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: rad size and efficiency

Adia Thermal sort of advocate this approach and produce some hardware to aid the determination. In many cases however it will be obvious that an upg...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Digital Showers and lower temperature hot water

Thanks, its actually @ianmk13 that has the need so tagging him so he sees your post

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Digital Showers and lower temperature hot water

Fair enough. With poor mains pressure the only advantage of a UVC is that it is sealed and so less likely to get general detritus in.

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: efficiency factor of heat pump brands

Interesting. COP of only 1 though for the reclaimed heat!

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: buffer/volumizer cupboard space eater, do i need one?

It certainly is with mine (Vaillant). The source of the defrost energy is basically the water in the system and during defrost the heat pump extract...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant 7kw vs Samsung 8kw gen7

75C for the Vaillant. This is principally a function of the refrigerant and most if not all R290 heat pumps will do 70-75. You wouldn't want to oper...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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