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: Apr 27, 2026
@webcmg Pretty busy at the mo and also getting solar + battery installed so not been paying attention to heat pump. We had family staying so had to t...
@webcmg Once you get your insulation sorted it sounds like you're on the right track, our room temps are a more comfortable >=21ºC Here's our Ja...
@webcmg I don't get the Vaillant external Temp entity with my HACs so will rely on Openweathermap for now, not sure why, maybe because my external sen...
I've got two Ambisense TRVs in our two coldest rooms. They're smart enough to increase the flow temp on the Arotherm+. I've also got two cheap Chine...
@webcmg What integration are you using for the outdoor temperature? I've just added OpenWeatherMap to try and get these values but not sure if they'...
@webcmg Here you go. What's your average flow temp now you've lowered the Heat Curve to 0.4?
@webcmg Our setup doesn't have anything like that, our Arotherm+ is connected to a Vaillant uniSTOR 300Ltr Unvented Cylinder with two or three other b...
@cathoderay Those stats came from SensoApp and Home Assistant. I'm not sure how accurate the SensoApp stats are but I'm sure there's room for my setup...
@webcmg Here you go. November December
@webcmg Our house is a recent self build, timber frame with block, K-rend rendering, and part wood cladding. We're fairly well insulated and had to do...
@webcmg Where did you get stuck when trying to use the heat curve? The diagram from the manual shows what the flow temp will be dependent upon the out...
@webcmg Not sure if I have one. Is that the pump attached to the UFH manifold/mixer? Your Flow temp is nearly 40ºC which probably explains why you'...
SPONSORS
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
SPONSORS
