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: Oct 6, 2026
@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...
@jamespa That’s a really interesting article. I’m a hostage to fortune with Octopus as computer says No. I don’t believe my house heat loss is as they...
There is certainly something different about the Octopus process. My Octopus survey, as I’ve mentioned elsewhere, suggested a heat loss of 14300w and ...
Oh dear. Always winter never Christmas?
Thanks for the advice I asked for (and got) their room schematic. I can only count 16 rooms (the stairs/landing count as two rooms). Maybe 19 is a typ...
Yes I’ve sent them the results from the initial survey that shows room by room calculations and required radiator sizes. They are considering whether ...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Octopussy cosy 6 experience
@paultheheating Unless things have changed more recentl...
By Toodles , 9 hours ago
-
RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Sorry I thought and meant to put 'may' in, but the diff...
By JamesPa , 11 hours ago
-
The alternative would be to move some productive energy...
By EtchedPixels , 12 hours ago
-
RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
By davidnolan22 , 13 hours ago
-
RE: Adding data centre electricity costs to domestic energy bills?
Potentially the largest data centre hub in Europe and t...
By Jeff , 17 hours ago
-
RE: Aerotherm and weather compensation
The principal cause of inefficiency if a heat pump is n...
By JamesPa , 1 day ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 1 day ago
-
RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
By bobflux , 1 day ago
-
RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
By mk1234 , 2 days ago
-
RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@etchedpixels Agreed, just a thought for others. I am...
By Watcher , 2 days ago
-
RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 3 days ago
-
Coming back on subject... A shortened version of the ...
By Transparent , 4 days ago
-
RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 4 days ago
-
RE: Free app: run the immersion / heat pump from Growatt battery & solar surplus – no Home Assistant
Please bear in mind, everyone, that in order to use thi...
By Majordennisbloodnok , 6 days ago
SPONSORS
