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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Sep 13, 2025
Profile Activity
Topics: 17 / Replies: 2131
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RE: Heat pumps and on/off working - starting to quantify it

@rod - I do have a separate third party kWh meter that supplies only the heat pump but maddeningly it is not modbus enabled, meaning I can only get re...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Anatomy of a cycle: here is a single cycle from my heat pump, from around 0640 to 0720 this morning. This has been the pattern for the last few days, ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

I think you may well have a good point here, particularly when the OAT gets into the defrost range. I will be doing some experiments once we have cold...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Pretty much so, I think the core question is: do the savings made during a setback amount to more or less than the extra costs incurred (because of lo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps are more than twice as efficient as fossil fuel heating systems in cold temperatures - Research

And the authors are hardly without an agenda. From their front page: "The Regulatory Assistance Project (RAP)® is an independent, non-partisan, non-go...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps are more than twice as efficient as fossil fuel heating systems in cold temperatures - Research

From near the top of the actual 'research' paper (BTB called 'Coming in from the Cold' - note quite the academic tone. Will the research group's next ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

This is exactly what I get when I click on the link, and it (it is everything on the screen) still has all the problems I mentioned: No labels...

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

@mikefl - I'm sure that's right, and useful to know, thanks for the contribution, but I think a lot of people (including me) are just not ready to tak...

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

Oh, for heavens sake, this is absolutely why I hate Home Assistant. Running that sqlite3_analyzer tool on the HA database corrupted my HA database, an...

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

@derek-m - HA uses a sqlite database by default, but for those who find that doesn't cause them enough pain, they can upgrade the pain by going for a ...

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

Thanks for the thanks. You might well be OK with 2GB of RAM, I monitor my system RAM usage an it is just under 1GB most of the time. The 4GB stipulati...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Adding auto-adaption to a Midea heat pump controller

It's called masterly inactivity... I had had similar thoughts, thinking about recovering from an overnight setback, for example, when the deviati...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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