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 23, 2026
@ianmk13 Yes radiators will need replacing, most if not all. Many of them were installed 30 years ago and the plumber basically guessed the sizes when...
A Heat Geek installer came to assess my house today. What a difference from the other surveys, as in the professionalism displayed. He was here for 3 ...
Dropped into to a newly opened Energy Support Hub run by volunteers this morning to see what they had to offer. There was already someone in there bem...
@gunboatdiplomat A little more complicated. I have one small room that is entirely solid wall, one large room with one wall run that is about 15% soli...
@jamespa I agree it's sensible - now I know what their strategy is and it's not just a huge error. As I posted earlier they will be offering a much la...
A final ‘No’ from Octopus. Apparently they accept that I might have a heat loss of 10w but their software is not able to distinguish the subtleties be...
@gunboatdiplomat That’s good news and a good price as well - I’m only faintly jealous. My indicative quote came out at £6200 (including an unvented ho...
@ivanopinion Octopus have told me they will have a Cosy 16 next year capable of delivering 50c and will cover the alleged 14kw heat loss - if I’d like...
@jamespa I’ve challenged Octopus’s figures using the very helpful comments from this forum. They’ve come back and admitted that the heat loss might no...
@jamespa - great idea. I’ll download the data. @gunboatdiplomat - yes similar house. Mine is detached, 160sqmtr, 300mm plus insulation, double glaz...
@ivanopinion and @jamespa. I do have the half hour readings (but then so do Octopus). However I’m going to have one last go. Today I called a local fi...
@jamespa My actual gas usage is 16500kwh & electricity 3500kwh. My survey assumed a heat demand of 19200kwh. So a heat loss of 14300w? It can’t be...
SPONSORS
Degrees of Separation
Latest Posts
-
Harvest Thermal - ASHP with a smart thermal battery
I thought people here might find this interesting, even...
By springswood , 16 minutes ago
-
RE: Heat pump installation quotations
@batpred The only draughty place is in the living ro...
By sttpd1917 , 36 minutes ago
-
Don't you dare. You just carry on as you are; as @batpr...
By Majordennisbloodnok , 52 minutes ago
-
RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@ragtime27 some rooms in our house only have one place ...
By Judith , 57 minutes ago
-
RE: Help me keep the faith with my air source heat pump installation
I didn't know about those, they look like good pieces o...
By JamesPa , 4 hours ago
-
@mkz, that's very helpful. Even if Urban Plumber are no...
By Majordennisbloodnok , 4 hours ago
-
RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 5 hours ago
-
My first question is why bother with the auto balancin...
By JamesPa , 5 hours ago
-
RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 5 hours ago
-
RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 6 hours ago
-
I share the same experience as @majordennisbloodnok hav...
By Old_Scientist , 6 hours ago
-
RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 9 hours ago
-
RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
-
RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
SPONSORS
