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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 12, 2025
Profile Activity
Topics: 17 / Replies: 2131
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RE: Do setbacks save energy without compromising comfort?

"Which of those wins" - that is exactly the question that I am trying here to answer empirically. It is fair to say that a number of opinions have bee...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

But we aren't trying to back fill the preceding valley, so to speak. Consider setbacks of varying lengths, let's say four hours and eight hours (set b...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

This is absolutely the way to go, and the only way to get real world answers. Your sudden jump at 0700 (which I think may refer to 0600 to 0700, de...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@gary @newhouse87 - I don't have UFH or an off peak tariff, so my current strategy is a bit different. I do have a house with a high thermal mass for ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Standard weather compensation doesn't work well with setbacks, the logic uses only the OAT and doesn't know the IAT is below what it should be. I di...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

The latest 48 hours data, comparing last night's data with the night before: Note that yesterday (1700) I increased the default right hand en...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@derek-m - no problem, here they are (posted publicly in the interests of open data etc etc; the relevant column heads should be self explanatory eg a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

I agree, the setback is used to effect an on/off switch (and have said as much more than once!). Limiting the drop in IAT as you suggest is certainly ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@derek-m - I agree, the IAT nadir was lower, but only by 0.5 degrees, and I think that is only part of the story, the other part being it is very wet ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@abernyte - thanks. Here is the last 24 hours' data, also showing the previous 24 hours for comparison: For some reason, today's recovery is s...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Here is the last 24 hours' data. The spike on the left hand side is a manually triggered DHW cycle, and on the right hand side we have the setback and...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@josephiah - thanks. Likewise, I found Midea's app to be hopeless, with dropped data, and no easy way to get the raw data for further analysis. I also...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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