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: Sep 11, 2026
red is 28mm orange is 22mm.
this is a rough diagram of the pipe runs, beyond the 28/22mm runs it drops to 15mm to rads. for scale the Kitchen is about 5.3m x 3.2m.
my worry is most of the 28mm and 22mm runs are in the kitchen ceiling so quite a bit of heat is going into the corner of the house where we dont sit m...
not sure if i should insulate the 28mm flow and return that goes to the radiator circuits. they are quite a long 8m approx. L shape run with other rad...
jees ive got 2 hopes of heating my bathroom then. someone suggested an standard design aluminium rad, instead of a towel rad, but im worried in a copp...
@gary so does that mean at a dt of 50 the actual flow is 70c for a 20c room temp?
so why dont sites list the output based on flow temp? cause most seem to use dt.
what about galvanic corrosion as i have copper pipes and other steel rads.
im thinking of going for the taller one and letting the heat from the plant room plus the flow/return 28mm and the primary 28mm's that are in the ceil...
both are delta T50 apparently, one is recalculated from a higher flow temp to be more realistic it says on the site.
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Indevolt Batteries UK Support & Info Thread
I've got a podcast recording scheduled this week where ...
By Mars , 9 minutes ago
-
RE: Renewable Heating Hub Homeowners' Q&A Podcast
I’m a little late posting this, but it’s genuinely one ...
By Mars , 18 minutes ago
-
RE: How should the Boiler Upgrade Scheme be reformed?
Ah, that makes sense when a combi is in place. The boil...
By Batpred , 3 hours ago
-
RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
@bobflux Thanks, that gives me something to check the i...
By Paul1098 , 3 hours ago
-
RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
Without doing some research I can't immediately answer ...
By JamesPa , 5 hours ago
-
RE: Tesla Powerwall (2) Calibration Cycles
For Powerwall calibration, avoid forcing repeated deep ...
By EnergyStorageTech , 12 hours ago
-
Over the years, due to the non barrier PEX underfloor h...
By bobflux , 23 hours ago
-
RE: Getting closer to a finished Haier system
All the 45° elbows required for getting the primaries i...
By Singlespeed , 1 day ago
-
RE: battery storage without solar
Indeed, current on the grid input = current used for ch...
By bobflux , 2 days ago
-
RE: Who's your electricity provider and what's your tariff?
@papahuhu @papahuhu A lot of tears and sweat went into ...
By Andris , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
We have the same problem, 12 mature trees clip the morn...
By Papahuhu , 3 days ago
-
RE: Solis inverters S6-EH1P: pros and cons and battery options
I had a battery and inverter installed a while ago, my ...
By Batpred , 3 days ago
-
RE: Is This Initial Free Quote From Octopus Trusted Partner Reasonable?
@ltron2 The EPC on our house is A-92, however that i...
By Rob of York , 3 days ago
-
RE: Heat pump branding. Clever, contemporary… or a bit too much?
The layout is confusing - much better like this: We b...
By downfield , 4 days ago
-
RE: Is it just me, or does tradesperson timekeeping and communication drive you absolutely mad?
My experience, backed up by opinions from various frien...
By Majordennisbloodnok , 4 days ago
SPONSORS
