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 7, 2026
@pie_eater Here:
@judith Will do as soon as I can. 😁
@pie_eater I'm just offering my 2 cents to say I agree with the comments - your installer sounds a wee bit er... flakey. MCS guidelines are exactly ...
@derek-m So I can't just compare the delta T @ 30 for both rads? Oh. my. days... I think I need to go to college for this. Back to playing with Heat ...
@jamespa I'm using the Delta T watts for both - proposed K22s and my existing K11s. Is that not right? 🙈 One designed for 50º flow temp the ...
I have just discovered that BOTH my installer's heat loss proposals for 4 kw Daikins (based on imaginary heat loss and imaginary fully insulated walls...
This is such a good analogy - it has really helped me to see the problem. I didn't realise that higher inside temps meant more heat loss. I don't kn...
@jancold Me too! 😁
@heacol thank you Brendon - that's helpful. BG want a buffer tank Octopus want a volumiser. To be fair, I didn't push back on the buffer with BG ...
@derek-m Thank you. If you get time please either have a look at the images I put in a post roughly a page back. Or see below: I got a link from Op...
@gunboatdiplomat I was being a muppet, sorry. 🤦🏻♀️ The Heat Geek guesstimate is double the Octopus quote for a...
@derek-m Thank you - that's great imagery - I have that kind of a visual brain so it appeals. I will play with it this weekend and have a go at tryi...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Heat pump installation quotations
That will be absolutely murdering your energy efficienc...
By EtchedPixels , 3 hours ago
-
RE: Harvest Thermal - ASHP with a smart thermal battery
The cooling side works much better if you can figure ou...
By EtchedPixels , 3 hours ago
-
Floor standing brackets for K3 rads
My neighbour is a plumber and said I would need to fit ...
By Singlespeed , 4 hours ago
-
After an intense recode, I’m pleased to announce that w...
By Mars , 4 hours ago
-
Why do you want to maintain a specific deltaT? The out...
By JamesPa , 6 hours ago
-
Hopefully this will answer your question. To...
By ASHP-BOBBA , 6 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
I would be interested to find out if others do this and...
By ASHP-BOBBA , 6 hours ago
-
Don't you dare. You just carry on as you are; as @batpr...
By Majordennisbloodnok , 8 hours 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 , 8 hours ago
-
RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 12 hours ago
-
RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 12 hours ago
-
RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 13 hours ago
-
RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 16 hours ago
-
RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 2 days ago
SPONSORS
