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 25, 2026
If you find the spec sheet of a 12kW Midea it’s only about 10kW at -2C (design temp for a lot of south England) whereas the 11kW Mitsubishi could actu...
The above beautifully detailed reply by Ray shows the issue of units used. Air changes per hour ACH are easy to visualise and hence a larger room volu...
If you want to get into engineering /architectural details the there are a couple of good blogs from guys, one with a solid wall cottage
Personally I wouldn’t touch BG with a barge pole, based on 2 family experiences with them when they went into solar. On your own heat loss estimate ...
Or is refusal to burn wood when the market price is above the strike price (and the system needs power presumably) simply gaming the system to maximis...
I’ve been educating myself on electricity supply issues and the above research briefing is a balanced summary. Newspapers and statements from companie...
@derek-m and others i think I’m getting there, so can I try this out…..? There are too many dTs in this game. Derek rightly corrected me on averag...
We’ve just had ufh in our (not yet finished) extension but the rest of the house has radiators (and will stay that way). We really had to insist that ...
Naive input here: I understand that LLH are supposed to act as impedance transformers (when set up right), giving the option of a higher delta T acr...
I’m not that stupid, but I’m having trouble getting my head around this, science, engineering, physics, control engineering and programme management t...
Aaaaah! your situation is more complicated than I realised!
- 26 Forums
- 2,610 Topics
- 60.8 K Posts
- 649 Online
- 6,967 Members
Join Us!
Worth Watching
Latest Posts
-
RE: Seeking ideas / information / commiseration - Pure Drive
Oh woe! 1: I've just read the Solis Inverter...
By Transparent , 7 minutes ago
-
RE: Electricity price predictions
I'd agree with @jamespa; the issue is not whether ToU t...
By Majordennisbloodnok , 9 minutes ago
-
Well those are "MC4" plugs and sockets. Yes the ones ...
By Transparent , 38 minutes ago
-
Hah! Well I guess we're all in the realm of conjectu...
By Transparent , 53 minutes ago
-
These are a bit hard to read but the information is in ...
By bobflux , 4 hours ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Ah, not so useful then For sure, hopefully before ...
By JamesPa , 5 hours ago
-
Thanks @editor I appreciate that things go wrong, bu...
By venkman , 5 hours ago
-
RE: Home energy storage & battery register
AC coupled Pure Drive 10kW battery Solar PV Solis P...
By Little Lights , 19 hours ago
-
RE: Rate the quality of your heat pump design and installation
@claireisamazing, that’s got to be one of the most posi...
By Mars , 19 hours ago
-
@jamespa Great, thanks - I've had a quick look at the a...
By Little Lights , 22 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: ispookie666 Manufacturer: Vaillant Mo...
By ispookie666 , 22 hours ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
I'm fairly new to the forum and have not voted. Back...
By ispookie666 , 22 hours ago
-
I am seeing an increasing number of occasions when my G...
By DavidAlgarve , 24 hours ago
-
RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
@editor Thanks Mars. I look forward to the subsequent ...
By DavidB , 1 day ago
-
RE: Anyone concerned about GivEnergy?
Fair enough. Its interesting that opentherm (for boil...
By JamesPa , 1 day ago
-
RE: Brand and installer questions for ASHP
A tank solely in the return (upstream of where the retu...
By JamesPa , 1 day ago
-
RE: UK DIY Battery: SEPLOS 48V 200Ah x2 + Sunsynk 8K – Safe Installation for Garage Conversion
thank you to all who have already replied. I have been...
By madsid , 1 day ago
-
RE: Home automation and the cloud; is there a better way?
+1 It's not just cloud though. Many devices have repla...
By bobflux , 2 days ago
-
RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
By JamesPa , 2 days ago
-
RE: Indevolt Batteries UK Support & Info Thread
Have you tried cutting the grid feed to see what actual...
By JamesPa , 2 days ago
-
RE: Renewables & Heat Pumps in the News
Critics and naysayers will be negative whatever the gov...
By JamesPa , 2 days ago
-
RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 3 days ago
-
RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
By ChandyKris , 3 days ago
-
RE: Upgrading my system, how far do I go?
For comparison, my PW3 with 11.04kW inverter, will char...
By Old_Scientist , 3 days ago



