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: Mar 10, 2026
You can try adjusting the Modulation & Overshoot settings in the MMI to start with. Enter installer mode to adjust these.
My 2 bed mid-terrace definitely dropped consistently after the heat pump was installed. Previously, because I still have single glazing, I used a smal...
Plus the pipe is in contact with the ground so it's a cold/moisture bridge and needs to be lifted or at least an air gap created underneath.
If it's accessible then it should be fine. The cylinder won't get even warm on the outside. Mine is in the loft which was annoying for about 3 weeks...
If it's accessible then it should be fine. The cylinder won't get even warm on the outside. Mine is in the loft which was annoying for about 3 weeks...
I found because I have very low heat loss I can set back the temp by only 1C during the higher rate periods because the Daikin overshoots 1-1.5C regar...
Three things that caused noise in my system after commissioning. Volumiser was gurgling which just turned out to be the air bleed valve not open. ...
@georgea You system isn't too different from mine. I don't have UFH and my house is a 2 bed mid-terrace so maybe a bit smaller. Heat loss 3.3 @ -3C...
Slight correct to the above defrost behaviour as the fan only ramps at the beginning and end of the cycle. The bit in the middle is when both the wate...
ASHP Model: Daikin Altherma 3M 4KW House loss: Calculated 3.3 at -3C, definitely overestimated though. Control mode: Weather Comp + Thermostat wit...
With existing rads it seems easier to just install A2W. I've seen some larger houses with multiple internal A2A units have pipework running all over t...
Valiant & Daikin have a form of load compensation or room influence which can dynamically adjust the WDC by a few degrees based on what thermostat...
Latest Posts
-
RE: Air-to-air heat pumps - best models and installers
@ashp-bobba, do I remember correctly that you install A...
By Mars , 8 hours ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
There isn’t as far as I know, @djh, but you’re welcome ...
By Majordennisbloodnok , 12 hours ago
-
RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Final Update. Yesterday, I was going through the moti...
By Unsure , 13 hours ago
-
RE: How much can an east/west solar solar system be oversized?
Best performance occurs with PV string near inverter no...
By bobflux , 13 hours ago
-
RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 16 hours ago
-
RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
Take it one step at a time. If you can get the dhw and...
By JamesPa , 23 hours ago
-
RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)
Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...
By Judith , 23 hours ago
-
No buffer or low loss header Grant controller in sens...
By JamesPa , 1 day ago
-
RE: Are We Sleepwalking Into Another Race to the Bottom?
That's an amazing job to get all that in there! A truly...
By Batpred , 1 day ago
-
RE: Anyone concerned about GivEnergy?
Thanks for your advice - I'll keep trying with the inst...
By JohnDwyer , 2 days ago
-
RE: Plug and play solar. Thoughts?
I am also yet to find a case where an installation that...
By Batpred , 2 days ago
-
RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
This is what I got from OVO. At least it was quick.. ...
By Batpred , 2 days ago
-
RE: IVT greenline HT Plus E - Circulation Pump Constantly On
Welcome to the forums. Irrespective of which brand yo...
By Mars , 2 days ago
-
RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Oh, how I love these old scientists!I'm in with your 5 ...
By LeJamaisContent , 2 days ago
-
RE: Jokes and fun posts about heat pumps and renewables
@jamespa Someone who is not easily phased I suppose.
By Toodles , 3 days ago
-
@downfield Once OE had removed our gas meter and capped...
By Toodles , 3 days ago
-
Living with a Low Loss Header (Or Measure For Measure, it’s All About the Pump)
I know, low loss headers (LLHs) aren’t necessarily ‘low...
By Toodles , 3 days ago
-
RE: What is the main ‘dictator’ of Agile’s unit price?
After seeing umpteen negative price slots again today, ...
By ChandyKris , 3 days ago
-
RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection
@ian-w Getting back to the problem in hand, what do yo...
By JamesPa , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@papahuhu Generally, I leave Homely to take care of mat...
By Toodles , 4 days ago
-
@judith, glad you found the story interesting. On eff...
By Mars , 4 days 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 , 4 days ago
