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: Aug 23, 2026
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!
@toodles I asked the plumber who was installing this yesterday (we’re only going to use the electric version in the summer when the water isn’t bei...
Hi Rachel, what a great piece of work and inspiring too. Since I have no coding skills I was planning to rely on a tariff such as Cosy and battery s...
@jwilliams89 are Heacol close enough?And the boss posts in this forum using@heacol
I don’t see any aspects of “doing a bad thing”, LLH are a good engineering solution to some identified problems, namely emitter sizes (and hence total...
@toodles graham hendra wrote an article on why llhs used to be needed and aren’t needed any more
Similar question to all i understand some ashp manufacturers insist on a llh/ 4 port buffer. Who are they so that they can be ignored, together with...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Who's your electricity provider and what's your tariff?
Yes, looks like very slight increases in the unit rate ...
By Old_Scientist , 35 minutes ago
-
RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 60 minutes ago
-
RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 3 hours ago
-
RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 3 hours ago
-
RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 4 hours ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 20 hours ago
-
@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 20 hours ago
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 2 days ago
-
RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 2 days ago
-
RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 3 days ago
-
@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 3 days ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 3 days ago
-
RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 4 days ago
SPONSORS
