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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Jul 14, 2025
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Topics: 17 / Replies: 2064
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RE: Installing a heat pump in a Grade II listed property

It does vary. Here is the chart again: On this chart it is more often 2-3 degrees. You can also the the warming caused by the heat pump turning of...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

It was probably me, but I think it also applies to many if not most heat pumps, because the immediate environment, specifically the air temperature, i...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

Sorry, I hope it is all there, but I didn't explain it well. Starting with your IAT/OAT delta t values (19/10 to 16/10 for 6 hours etc), instead of ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

The AUC calculations I did were for the whole week, with hourly intervals. I think the idea that daily setbacks put the whole in a 'different place'...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

Another thought has occurred to me. Maybe the monolithic house, once it is up to temperature, is such a huge heat (energy) store that you can turn off...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

I deliberately used the regression equation from test week, so they should be representative. The average IAT did change over the period, but only sli...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

I do quite a lot of sailing, which is why I am interested in forecast accuracy, particularly for wind speed and direction, but also for visibility, he...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

I agree, but I think there are sufficient caveats. In particular, my post that reported my findings ended with a statement that my findings were not d...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

This is an important point, the effects of poor (and for that matter mediocre and good) design and adjustment are effectively unknown unknowns. While ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

@showi - thank you, that is very kind of you! We are, like Sisyphus, condemned to roll this ball forever! I will get back to you tomorrow.

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Installing a heat pump in a Grade II listed property

There has indeed been a lot of discussion about whether setbacks save money and/or compromise comfort, including this mega-thread. The answer is not s...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Real world connection to a heat pump over modbus

Part 3: Hardware Installation After a barely excusable delay, I return to an account of how I set up my wired modbus connection to my heat pump, whi...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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