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. 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: Mar 7, 2026
@editor The firm that invented/developed the Immersun was a PV/solar thermal/renewable energy installation company based in a small town in norther...
We have a 5kw Aerotherm feeding an existing UFH manifold plus one radiator. Our flow rate is also 860 lph and the system is performing beautifully w...
@davidb Hi, if you haven’t already done so then have a look at the link below and in particular read the bits about active, inactive and e...
We are in an extremely well insulated (virtually passive) all electric house - we self built it in 2011. We have a full fat 3.68kw full-fat FiT pV s...
We self built in 2011. The ground and top floors are each around 100m2 The house is extremely well insulated with U values as follows, walls=0.15, r...
@ashrolls Air circulating in the system will confuse flow meters and create noise.
We have both. The advantage of A2A is a very rapid response and the ability to cool in the summer - our A2A is for the south facing rear of the hous...
Our BUS voucher was due to expire the working day prior to the installation date so our supplier cancelled the voucher and applied for a new ...
@jamespa our install was mid September 2025, we had the MCS questionnaire a few weeks later.
@editor I rather suspect that there will be several outcomes;- 1) Installation of ASHPs into the existing housing stock will radically slow down....
If you could get hold of a Stainless steel container of Vitrified High Level waste, then it has a heat output of around 2KW. There are difficulties ...
- 26 Forums
- 2,582 Topics
- 60.1 K Posts
- 387 Online
- 6,896 Members
Join Us!
Worth Watching
Latest Posts
-
RE: Jokes and fun posts about heat pumps and renewables
Shocking.
By Majordennisbloodnok , 1 hour ago
-
RE: Anyone concerned about GivEnergy?
@jostar Given the circumstances I think most folk wo...
By KevH , 2 hours ago
-
RE: What is the main ‘dictator’ of Agile’s unit price?
Interesting. I am on OG Variable and the night time ...
By JamesPa , 2 hours ago
-
RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
@wesleyp1874 OK so the installation was paid for by ...
By JamesPa , 2 hours ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
The vaillant controller and app do all of that (and mor...
By JamesPa , 3 hours ago
-
RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection
RECC are abysmal. I was hoping it’d be HIES.
By Mars , 3 hours ago
-
RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
I read this thread from the beginning to its end.And th...
By LeJamaisContent , 4 hours ago
-
And one should not underestimate the enhanced flavour p...
By Toodles , 6 hours ago
-
RE: Water law settings... A year on
Yes it does Apart from the abbreviations! We're in ...
By Profzarkov , 8 hours ago
-
Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Occasionally, during a Set Back period the com...
By Unsure , 14 hours ago
-
Very thought provoking Mars, and it just goes to reinfo...
By Toodles , 15 hours ago
-
RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Yes it's a shame the manufacturers make this vital info...
By bobflux , 18 hours ago
-
RE: Plug and play solar. Thoughts?
News that the German VDE is widening the plug in solar ...
By Batpred , 1 day ago
-
My Immersun power diverter problems now they have ceased trading
I have had an Immersun unit for 15 years that happily w...
By pjcwood , 1 day ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Quite often it’s the ones that have to figh...
By Papahuhu , 1 day ago
-
RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
Hello @Penval unfortunately, now the winter is gone and...
By LeJamaisContent , 1 day ago
-
RE: Grant Aerona R32 – Summer, Winter mode & Setbacks
What are you envisaging doing throughout the day? Pers...
By JamesPa , 1 day ago
-
@batpred ok My energy delivered in kWh was a...
By JamesPa , 2 days ago
-
-
RE: Global Energy Systems Thurso ASHP
Hello @outlawuk sorry, I forgot about this, important:i...
By LeJamaisContent , 2 days ago
-
RE: Debugging my legionella immersion heater
@prunus Hmm 57 vs 65 does seem a way off, bu...
By JamesPa , 2 days ago
-
RE: Indevolt Batteries UK Support & Info Thread
@batpred I assume you plugin the battery on a wall sock...
By ChandyKris , 2 days ago
-
RE: Grant ASHP keeps switching on every hour
Frankly I have no idea how a room thermostat is ever go...
By JamesPa , 3 days ago

