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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Jul 16, 2025
Profile Activity
Topics: 16 / Replies: 2624
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RE: Say hello and introduce yourself

Thats better insulated than my 1930s house of about the same size, apart from the loft which is easily and cheaply upgraded (so I would recommend doin...

4 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: DHW Efficiency

You need an extra pump that pumps the water from the DHW tank through the heat exchanger which is external to the DHW tank. The other side of the PGE...

4 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Say hello and introduce yourself

I look forward to the further info and will do my best to help. The thing about heating is that the physics is extremely simple indeed but the a...

5 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: solar gain in south rooms best approach?

Thats definitely one option. I also have south facing rooms. One, our main living room has a fan radiator which modulates its fan down and eventual...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DHW Efficiency

PHE plus UVC direct cylinder (no coil) plus pump is cheaper than most heat pump cylinders. However its 'different' and people dont like 'different'. ...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: New kitchen with no walls – will fan coil units work?

@adamkis the one I have, there is a smaller one but the size difference is quite small and obviously the fan will have to work harder on the smaller o...

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

Interesting Have you got some examples/evidence you can point to. So far my Vaillant 7kW operated 24x7 open zone no buffer tank is working out 13% ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: new kitchen no walls free, will fan coil units work?

I have one Mitsubishi wall mounted fan coil in my otherwise all radiator ASHP system, installed because a passive radiator wouldn't fit. It's in the r...

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

That is true, there are the most efficient ways to run a heat pump, although not always the cheapest because ToU tarrifs can distort the picture. ...

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

Thanks for this, good (and useful) analysis! As a matter of interest where did you see that statement, the one I saw (which appears to be bor...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising DHW in summer (once heating season ends)

Unless you use negligible hot water the energy used by the compressor will dominate, the water pump will be negligible. So you should optimise for th...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Say hello and introduce yourself

Welcome to the forum and please feel free to ask as many questions as you need to, no question is 'stupid'. If you havent already can I suggest you r...

5 months ago
Forum
Introductions, Forum Rules & Updates
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