Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering youāll be able to ask questions, join discussions, follow topics youāre interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Sep 9, 2026
@derek-m - I can't even begin to imagine how you put it all together. Thousands of cells, hundreds of formulae, some of which make my eyes pop: =IF(...
@derek-m - thanks.
A bit rum restricting comment. What I might consider constructive you might consider destructive. Never forget that free speech includes the right to ...
I still have Home Assistant on my system, and here is its version of the last month, showing OAT ('byte_09'), IAT ('MD02') and hourly trailing 24 ener...
@jamespa - OK, here are my calculated energy values and the Midea energy values for the same time frame as in the earlier chart plotted one above the ...
Don't feel bad about this, intellectual rigour is essential, and I would rather be corrected than wrong! I think I get your reasoning, especially wi...
Perhaps another way of putting it is this: yes, the heat loss will be marginally lower during a setback, and we could even at a stretch call that 'sav...
I certainly welcome you questioning my data results and conclusions, as I have no divine way of getting things right, and am just as fallible as the n...
Very prudent. @jamespa- I'm working on it at the moment, I think I am onto something, but at the moment I am only about 50% sure I have the answer, ...
I do something similar behind the scenes, though my inputs for energy in are amps and volts. I then average them over the hour (I found this gives the...
I am not convinced you are going about this the right way. Normally you take a hypothesis (model), use it to make a prediction, and then test that aga...
I would, but at the moment I have what I think is the right balance between getting a saving and comfort. I have a bit of a cliff edge as the IAT fall...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Adventures in heat loss calculations
That is a very good point which I hadn't taken into acc...
By cathodeRay , 53 minutes ago
-
I bought it, read it, enjoyed it. Despite my earlier c...
By JamesPa , 4 hours ago
-
RE: Tell us about your Solar (PV) setup
Our PV set-up has moved over time. Warning this is a sh...
By Judith , 17 hours ago
-
RE: Where heat loss surveys seem to go against practical reality
@cathoderay @jamespa I've managed to get some nice re...
By Rob of York , 1 day ago
-
RE: 7kW EV Charger Options Advice
Doh, not sure that I was thinking straight there, less ...
By Rusty , 1 day ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
Iām really liking reading through this thread and the r...
By Judith , 1 day ago
-
Thank you @trebor12345
By rgabor , 1 day ago
-
Panasonic Free Multi Z and Etherea Internal units.
My prospective installers have suggested the Panasonic ...
By Toodles , 2 days ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
Great. You just need to find a way of cranking up your...
By JamesPa , 2 days ago
-
RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
We had two heat pumps installed without Govt funding. H...
By Rob of York , 2 days ago
-
My Adapt is finally installed and running! Almost a yea...
By tomasmcguinness , 2 days ago
-
-
RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 5 days ago
-
RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 5 days ago
SPONSORS
