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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 6, 2025
Profile Activity
Topics: 17 / Replies: 2678
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RE: Commencing on an ASHP Installation Process

In that case treating it as a separate space seems eminently sensible to me! I took a look back through the thread and I posted earlier sone sense c...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Commencing on an ASHP Installation Process

That all sounds very logical. The only question I would ask is how well insulated is the conservatory from the rest of the house. If its not well i...

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

This aspect of control is a bit variable from manufacturer to manufacturer so far as I can tell from reading manuals and discussions here. For exampl...

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

@Judith, @ccap The control problem is not actually as simple as it might seem, even in 2025! There is a whole branch of engineering ('control theor...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@fillib It would be very interesting indeed to determine your actual house loss by plotting ASHP heat delivered vs OAT (eg on a daily basis). I look...

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

Yes exactly that. The UI presents it as adjusting the target room temperature. What it actually does is shift the WC curve (whether or not room infl...

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

There are a couple of general points to make here. Contrary to what the manufacturers of heating control systems would like us to believe: Lots ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: volumizer question.

What's the problem you are trying to solve. The answer may be both, tell us more about your system, your house, and what problem you think you have

3 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

Good luck. For what it is worth my system was very definitely an upgrade to my heating. Both DHW and space heating are now far superior to what I ha...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

Here are the performance curves for the 3 and 5kW machines. Sorry they are in Czech, these tables dont seem to appear on the UK website. Note that ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

Here is an analysis of the rads proposed excluding the bathroom where Im not sure what is actually being suggested. The big differences, in favour of...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

@eliuccio I think what you are seeing is the variation is loss estimates. It happens, they are estimates, making different assumptions any of whic...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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