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: Feb 4, 2026
Funnily enough i was just doing this yesterday .. I assumed 20% anti freeze for a 3965 specific heat . i couldn't get a rspo...
Sampling rate is every 30 seconds ray , if i zoom in i can see that rate . i probably have not explained myself vey well , i have been using we...
thank you CathodeRay , Unfortunately the chart is as it comes , i can add or remove data streams ,and change the x axis length . i have asked th...
Well putHarriUp , particularly so since the hs has a lot of windows and faces south east , so any sun messes with steady state experiments sometging...
i thought this was quite interesting , two very different wave forms , the area to the left of the hot water demand is set at 15c overnigh...
As s-g has drawn to my limited brain cells attention , its actually amps not kw HarriUp .doh. RE my heat curve/ weather compensation , to set i...
Thank you s-gatorator , i.am.such.a.numpty ! i even put amps at the graph post !! re this bit .. ''multiply this average value...
just in case it helps , here is my graph for the last three days on the ashp , and also the energy usage for january day by day to today .. ...
Thank you cathodeRay, It looks like neither flow temp graph is horrific , thats very reassuring , and i think the conversational trend is that...
thank you HarriUp , I can see what you mean , and my guess is the flow temps are being measured at the pump , and ,by the time its got into ...
Thank you Judith , i do have a smart meter ,and also the foxcloud and energy stats apps , however i find it a little hard to compare the exact p...
Thank you James , 15c is my indoor temp at night, 16c during theday .working outside on the banrs meanswhen i come in that feels quitewarm , then i us...
- 27 Forums
- 2,758 Topics
- 64.9 K Posts
- 1,860 Online
- 7,162 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Where heat loss surveys seem to go against practical reality
@cathoderay I started to record oil usage per month on ...
By ian33a , 1 hour ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 5 hours ago
-
RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 10 hours ago
-
-
RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
-
RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
-
RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
-
RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
-
It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
-
RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 1 day 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 , 3 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 , 4 days ago
-
RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago



