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
The latest last 24 hours of data: Pretty much as before, steady and mild OAT at around 10 degrees, heat pump cycling around twice an hour to m...
I have never said all heat pumps are Mideas, quite the opposite, nor have I ever said all systems have primary and secondary pumps, again, quite the o...
@bob77 - I think your understanding is correct, at least for some systems - other heat pumps may/will vary, but on a Midea setup, the secondary pump i...
@derek-m - I think we need to consider whether there is a heat exchanger or not, and if so, which pump we are talking about. In my case there is, and ...
@bob77 - with the caveat that I have a heat exchanger, and so a primary and secondary pump - it does look like the secondary pump runs continuously wh...
Here we go, data from the last few hours since I added compressor frequency to the data, as it happens a period of relative stability in OAT, though i...
I'm already doing that, and most of the time it works, but I still have to iron out a bug, running my hourly auto-adaption script, which varies the LW...
@mikefl - a useful comparison, even if it is, I agree, a rather busy chart! There is a more marked spike, but there is also a notable dip after the sp...
That's by intention, achieved by using the room stat timer as an on/off switch, by setting it to 12 degrees for off, 26 degrees for on. I could do the...
I'm sorry, but I don't have a lot of time for those emoncms how not to do a chart charts. There is no legend, meaning there is no way of knowing what ...
@derek-m - my heat pump appears to keep the flow rate steady, unless the heat pump is completely off. Flowrate (m^hr) added in gold, trace for last 24...
I agree, and in the main thread with the data I have been careful to point out this is a very limited data set, less than a week, with nothing excepti...
SPONSORS
Degrees of Separation
Latest Posts
-
Thank you @jamespa I really appreciate that, particu...
By Mars , 1 second ago
-
RE: Adventures in heat loss calculations
That is a very good point which I hadn't taken into acc...
By cathodeRay , 1 hour 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
