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: May 10, 2026
Manufacturer: appliances direct/superheat Model: 7Kw Type: ASHP. Arrangement: Monoblock + single zone, open loop. No hot water Area of Country...
I think you can set the temperature to very low 5C in the time weekly timer. Either do it for the full period when the fire is expected to be on, or y...
Btw, fixing your system so the underfloor heating is working is definitely by far the best you can do to improve your COP substantially. It also provi...
The system doesn’t seem to have return or deltat as a value. For that you’d need something like openenergymonitor. For the cycling I have home assista...
Hi David, as I understand it running the system in active mode means that it is not running in pure weather compensation mode and is hence a little le...
I’ve got a similar system, but it’s a 5kW unit, I understand that is the same hardware as the 3.5. I get a mildly disappointing 3.8 cop. This seems to...
Good old physics tells us that it is impossible to not have to put extra energy in to get the temperature up without putting extra energy in. I havent...
@cathoderay the principle is as probably described somewhere above, that the energy usage is directly proportional to the deltaT between outside and i...
interestingly that’s not what I see, here is the same from my calculations on your data, there is clearly extra energy being put in:
@cathoderay i’m getting different results, using this method: calculate the average kWh/inside outside deltaT Kelvin (sum(kWh in)/sum(deltaT), that ...
As I understand it, it depends where the gauges are relative to the pump and blockage. The gauge in the heat pump is before the pump, so where it is l...
I think that might be an indication of some blockage in the system. I had that difference and lower than the standard vaillant 14 l/min flow rate, unt...
SPONSORS
Degrees of Separation
Latest Posts
-
@jimseng Hi, I'm not sure what area you are in but a...
By mkz , 4 minutes ago
-
RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 29 minutes ago
-
My first question is why bother with the auto balancin...
By JamesPa , 56 minutes ago
-
RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 59 minutes ago
-
RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 1 hour ago
-
I share the same experience as @majordennisbloodnok hav...
By Old_Scientist , 2 hours ago
-
I agree. So far as I understand, we can't necessarily...
By Majordennisbloodnok , 3 hours ago
-
RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 5 hours ago
-
RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@jamespa many thanks, definitely i will give the pre...
By ragtime27 , 16 hours ago
-
RE: Heat pump installation quotations
@jamespa I noticed that in the Heat Geek design consult...
By Batpred , 18 hours ago
-
RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
-
RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
-
RE: Help me keep the faith with my air source heat pump installation
@jamespa these:
By AdamK , 1 day ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
By Harebell , 2 days ago
SPONSORS
