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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Jul 10, 2025
Topics: 2 / Replies: 366
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@derek-m and others i think I’m getting there, so can I try this out…..? There are too many dTs in this game. Derek rightly corrected me on averag...

1 year ago
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RE: Retrofitting UFH with a heat pump already installed

We’ve just had ufh in our (not yet finished) extension but the rest of the house has radiators (and will stay that way). We really had to insist that ...

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Naive input here: I understand that LLH are supposed to act as impedance transformers (when set up right), giving the option of a higher delta T acr...

1 year ago
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RE: Electricity price predictions

I’m not that stupid, but I’m having trouble getting my head around this, science, engineering, physics, control engineering and programme management t...

1 year ago
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RE: Dual Fuel Towel Rail valve settings.

@toodles I asked the plumber who was installing this yesterday (we’re only going to use the electric version in the summer when the water isn’t bei...

1 year ago
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RE: Running my heat pump for half the cost of a gas boiler

Hi Rachel, what a great piece of work and inspiring too. Since I have no coding skills I was planning to rely on a tariff such as Cosy and battery s...

1 year ago
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RE: Rate the quality of your heat pump design and installation

@jwilliams89 are Heacol close enough?And the boss posts in this forum using@heacol

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

I don’t see any aspects of “doing a bad thing”, LLH are a good engineering solution to some identified problems, namely emitter sizes (and hence total...

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@toodles graham hendra wrote an article on why llhs used to be needed and aren’t needed any more

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Similar question to all i understand some ashp manufacturers insist on a llh/ 4 port buffer. Who are they so that they can be ignored, together with...

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@derek-m and all We are at the getting to grips with quotes etc stage. When our extension is finished (and only then, and if we can face more disrup...

1 year ago
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