
Last seen: Jul 25, 2025
@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...
It isn't 'very simple', but for systems that have a modbus interface, it is very possible to get a lot of data. Here is the last two days data from my...
@jamespa - I am continuing to collect data, which will only apply to my compromised ungeneralisable setup in the conditions in which it was collected,...
@kev-m - I think you may be onto something, an average hiding detail. Here's a zoom in on three defrosts over a two hour period on a recent cold morni...
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Latest Posts
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RE: No-code, plug-and-play monitoring for your heat pump
The issue with the Grant is that you have to wire direc...
By Grantmethestrength , 1 hour ago
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RE: Is this just haze or something more?
I am not a scientist nor a meteorologist and I know the...
By Toodles , 1 hour ago
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RE: Benefits of an extra horizontal loop for GSHP
It will improve performance, but by how much depends on...
By Brendon Uys , 6 hours ago
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RE: The good, the bad and the not that great β my heat pump installation
Said I would pop back with a update. Only Mr Jesus h...
By Burtis , 20 hours ago
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RE: Buffers, hot water and cooling
Thats presumably heat pump DT, what about radiator DT a...
By JamesPa , 21 hours ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Exactly the same here. We now have 13.5kWh ...
By Old_Scientist , 1 day ago
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Compressor and Evaporator Stratification
I have had a few issues with my Hitachi spilt heatpump ...
By trebor12345 , 1 day ago
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RE: Wood burner with ASHP - direct air?
This depends on the size of your wood burner and size/t...
By Lucia , 2 days ago
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RE: Difficult positioning of air source heat pump
@rikiarn It's a not a buffer it's a volumiser which is ...
By Lucia , 2 days ago
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RE: Is your heat pump insured?
To make things clear, lots of insurance companies cover...
By Lucia , 2 days ago
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RE: Boxt Heat Pump Installation Experience
@adrian any updates since installation? How is it perfo...
By Ashfp , 2 days ago
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RE: Say hello and introduce yourself
Hi @seatonian - Yes, I know Seaton, and I have the Nat...
By Transparent , 3 days ago
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@seatonian got your email. Will connect you with a reco...
By Mars , 4 days ago
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@downfield and @toddles, this isnβt in the settings cur...
By Mars , 6 days ago
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RE: Homely launched for Grant Aerona ASHP control
I haven't bought the Aerona Smart Controller (Β£700!) bu...
By Prunus , 6 days ago
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RE: Antifreeze top up for my heat pump - is this a rip off?
For the record, Grant supply ethylene glycol for their ...
By Prunus , 6 days ago
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer amazing. Well done!
By Mars , 6 days ago
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RE: Air source heat pump roll call β what heat pump brand and model do you have?
Ebac 5kw - Monobloc R32. Developed and made in UK - Mit...
By marcinwloch69@gmail.com , 1 week ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Just another thought - it might be worth thinking about...
By JamesPa , 1 week ago
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RE: BUS Grant: removal of all other fossil fuel heat sources
@rikiarn - just have a think as to how much it will cos...
By Transparent , 1 week ago