Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re 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 6, 2026
Being a recipient of 'charity' does odd things to our heads. As others have said, your installation wasn't free, it was just free to you, and someone ...
@judith - thank you very much. I take it the dips you can see in the mainly green chart you posted on the right above are defrosts, on the assumption ...
@judith - thanks. Can you get leaving and returning water temperature at one minute intervals? That would let us see frequency and duration of defrost...
Yes, I do. I also have glycol in the primary circuit, and use a specific heat capacity of 4.05 for that (I noticed you use 4.2 ie pure water). The sec...
No! I mentioned this in the post that has the download ("ignore them, along with some of the never change columns eg room_temp which is Midea's idea o...
Of course, that should be a key thing, warmer air can hold more water than cooler air. But in practice my heat pump seems to do much the same defrost ...
That is indeed what they are, though Midea calls readings from it the Outdoor ambient temperature. As ambient is in practice rather vague (does it mea...
Of the charts that I posted on 17/01/2025 at 8:46 am, the first two are normal cycling, the second two are defrost cycles. The way I identify defrost ...
- 27 Forums
- 2,758 Topics
- 64.9 K Posts
- 2,514 Online
- 7,162 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Where heat loss surveys seem to go against practical reality
I suspect most if not all of the tank level measuring s...
By cathodeRay , 12 minutes ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 17 hours ago
-
RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 22 hours ago
-
-
RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 2 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 , 2 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 2 days ago
-
RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 2 days ago
-
It’s been out a few days and Amazon has already attache...
By Mars , 2 days ago
-
RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 4 days ago
-
RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
-
RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 7 days ago



