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 18, 2026
@adamk Hi I see you posted on openenergymonitor, this in particular house is 1967 3 bed extended over the garage in 2005 to 4 bed then...
Often the default password is in the installation manual, which is on manualslib. Its unlikely to have been changed or personalised to the installer ...
Noted NR is definitely off. According to the Vaillant manual weather comp curve 0.5 is about 35C at 0C OAT Suggest you bump this up to say 0.8 whic...
Thats good at least. Is your soil locally damp or dry? Im presuming the floor is something like 100mm slab on hardcore on soil with a DPC somewhere....
fair enough! Better advice IMHO would be don't work on a house with uninsulated UFH, or if you do fit radiators instead! Well thats an admis...
Yes in general terms (obviously I cant tell if its exactly the right setting). Wait at least a day before changing it again, perhaps 2. This can tak...
OK. Please confirm heat curve and max flow temp settings last night. Are you 100% certain noise reduction mode is off. Something is capping flow tem...
No it isnt, because that's a political nightmare. The politically convenient decision which has (at least in part) caused the electricity/gas ratio...
Well that sounds like a win, hopefully. Nothing else to ask I dont think (other than the installer password if there is one - which is probably the d...
OK so feed to rads colder than feed to UFH and colder than flow temp from heat pump. Not good, losing efficiency and thus oomph to building. Taking ...
It does feel like you may have a genuine fault, unfortunately perhaps not bad enough to convince the manufacturer easily. Id be tempted to collect ...
All understood. Basically you are planning on creating a recirculating loop. There are a couple of threads running about this with people complaini...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Why are ASHP installs so expensive?
Thanks for all the interesting responses. I managed ...
By springswood , 3 minutes ago
-
RE: Heat Pump deployment statistics: June 2026
To my eyes, sat behind all of this is a basic policy ma...
By Temperature_Gradient , 15 hours ago
-
Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 19 hours ago
-
We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 19 hours ago
-
RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 22 hours ago
-
RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
Have you looked at the Nibe website? They list their ap...
By Lizzie , 23 hours ago
-
RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 2 days ago
-
We kept ours and Heat Geek would have been in touch if ...
By Batpred , 3 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 3 days ago
-
RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 3 days ago
-
RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 3 days ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 3 days ago
-
RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 4 days ago
-
SPONSORS
