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Last seen: Mar 21, 2026
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...
a second look for derek
@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 ...
. @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...
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...
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?” ...
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...
@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...
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...
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...
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...
this mornings HP activity here concurs with harryup and cathoderay Regarding defrosting. the fan definitely stops so there is just the circulating p...
Latest Posts
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils mine is mostly off now. Hot water for an hour ...
By AndrewJ , 11 hours ago
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RE: Setback savings - fact or fiction?
I too agree with what you say, and am grateful to you f...
By cathodeRay , 11 hours ago
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RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 12 hours ago
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RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 13 hours ago
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@majordennisbloodnok good advice, thanks for that.
By David999 , 16 hours ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 19 hours ago
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RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 1 day ago
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 1 day ago
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Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 2 days ago
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I have a Contactum CU. Would the below RCBO (descriptio...
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RE: Samsung gen 7 HP 12kw - auto control issue and water law
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RE: Anyone concerned about GivEnergy?
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RE: Grant Aeona 3 R32 cycling with weather compensation.
The hot water heating looks normal. The heat transfer ...
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
Good questions @temperature_gradient. My understanding ...
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