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SUNandAIR
SUNandAIR
@sunandair
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Honorable Member
Joined: Dec 30, 2022
Last seen: Aug 13, 2026
Profile Activity
Topics: 5 / Replies: 564
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RE: Do setbacks save energy without compromising comfort?

James, can you remind me what is your definition of setback, in terms of temperature? What are you defining as target daytime room temperature and wha...

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

a second look for derek

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

@cathoderay thanks for that update youre right imo, and that’s why I started with the extreme example ... 20% is significant although JPA might still ...

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

. @derek-m very funny realizing that’s you just being your humourous self I won’t bother reminding you and James that I did say it was an extreme e...

3 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 @jamespa quoted you are thinking there is only a 5% saving when operating a setback. This obviously seems a small saving for the effort of doi...

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

I’m a bit lost on this thread can someone enlighten me if the topic has changed? It was : “Do setbacks save energy without compromising comfort?” ...

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

Of course... I’m sure it will be enlightening.... btw ive attached the following hourly chart showing the modulated operation for 56 minutes (not 30...

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

@rod and Derek.... fascinating graph esp to see the kw used to restart heating after defrost. I can’t get that overlay on my graphs. However there i...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Optimising ecodan ASHP

That’s ok… if you’re getting the room temperature you want at all outside temperatures then you may as you say, be lucky and have got the right WCcurv...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Optimising ecodan ASHP

This is exactly the same issue we had with our installation a year ago. We had the missing energy data. We also had a 3rd party thermostat which meant...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Icy cold weather, weather compensation and consumption

30th November was a bit cold we operated a setback to 16C and still got a TOPUP in the middle of the night Room temp is black line. Green is Outsi...

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

this mornings HP activity here concurs with harryup and cathoderay Regarding defrosting. the fan definitely stops so there is just the circulating p...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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