
Last seen: Sep 12, 2025
@derek-m - it's in the post (and is repeated in a reply to @jamespa I am about to post). In short, it is the equation given by the spreadsheet for the...
I agree, but at the moment the results are quite far apart. That is what we have to reconcile. One method is over-correcting, or the other is under-co...
I haven't forgotten there is at least one other way to approach this problem: compare the observed energy use during a setback with the expected energ...
@jamespa - perhaps more importantly, recall that we are using a corrected energy in, the 1.18 correction factor that (on average) brings the calculate...
(a) this is in fact something of an unknown. The external kWh meter reads all energy going in to the heat pump, and as both circulating pumps are supp...
@jamespa is using my data, meaning I can explain how the setbacks are done, and the other factors involved: (1) my system is always on weather compe...
I agree, and I hope you will agree that this is what beneficial collaboration can achieve, which I think it is fair to say is still happening here, de...
@jamespa - I have no doubt at all in my mind that you are a fair and good-natured person, based on what I have seen on this forum. You have also genui...
No one likes being told they come across as being patronising and arrogant, all the more so if they really are that way. I wrote that earlier remark (...
There is a difference between what in medicine we call clinical significance and statistical significance (which is boils down to a test of how likely...
@sunandair - I am very aware that at times @jamepa and @derek-m can come across as patronising self-appointed experts who know it all, and the rest of...
The latest analysis by @jamespa of my Midea data (see recent posts in this thread) suggests the savings may be higher, around 20%, for a six hour over...
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RE: Midea ASHP – how to set weather compensation
It's totally dependent on the lock shield, some are ter...
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Vat free applies to supply and install only no DIY.
By JamesPa , 21 minutes ago
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RE: Humming sound on new install.
One other thing, I haven’t balanced the rads yet so cur...
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Funny story Graham, when I started looking to ...
By DREI , 8 hours ago
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RE: Buffers, hot water and cooling
@dgclimatecontrol thanks, that's helpful.
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RE: Failing heat pump system - seeking thoughts on a rebuild
I realise im overdue an update on my situation. first...
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RE: Replacing Worcester oil boiler with an ASHP
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Yes Octopus only have the £9 a month service plan for t...
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RE: Who’s Caved and Switched the Heating On Already?
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RE: What crazy nonsense are inverter limits and why are they imposed?
A week later, I'm finally picking up this comment... ...
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RE: COP is not the only measure of efficiency
We keep all our TRVs fully open using the whole house a...
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I am pleased to say at 4pm today we have added another ...
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RE: Renewables & Heat Pumps in the News
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RE: Vaillant aroTherm Plus 10kW thoughts?
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
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RE: Anyone still weathering it out with Agile?
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RE: 300 Liter Tank - Do I have to heat it all?
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
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RE: Solar Thermal DHW and ASHP
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