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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Jul 28, 2025
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Topics: 17 / Replies: 2066
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RE: Do setbacks save energy without compromising comfort?

@derek-m - another reason why folks might be wary of posting their observations is that they know if they do, they are likely to get a pasting. Also a...

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

You may be right. I had in mind a sort of over-running, heat that has been generated, and is visible in the LWT, but has yet to be distributed. Consid...

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

Equally, folks might want to complain, not getting the performance they hoped they would get etc etc. There's no shortage of such complaints about oth...

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

@newhouse87 - I agree, the few people who have reported their findings (very much to their credit, if only others would, then we would have a better o...

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

No need to get sarky again. As far as I have been able to ascertain, the secondary pump always runs when the heating is on, as in the thermostat is ...

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

I've added a column, comp_on, 0 for off, 1 for on, based on amps > 0 or not. Note the htg_on_off and dhw_on_off columns are based on the three port...

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

It's not you I don't trust, it is any human being (me included), as it is impossible not to see the data in the file! The fan speed might be a prox...

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

I daresay this chart may be of some interest, because it covers a three day period of unusually stable outside air temps while running a six hour over...

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

Thanks, that would be very helpful, though some of the data you ask for is easier said than done (replies in bold): It is going to take a little ...

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

This sort of abrasive remark does you no credit. There is no argument about whether the laws of physics apply, I accept them just as much as you do. N...

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

@derek-m - what you said was ie 4.44 drop over 8 hours is the same as 1.48 over 24 hours, which makes sense and is, according to you, legit (you ...

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

I think you'll find the dumbing down comes not from my perfectly reasonable adjustment of the maths level for a simpler problem, but rather from the w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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