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 21, 2026
Yes, by circulators I refer to installing one or two secondary circulators for the heat pump ( if I install a buffer). The two apartments share one he...
@toodles Thank you for your reply. There are no TRV 's on the radiators, just the lockshield valves. Something else I'd like to ask. Maybe a buffe...
@toodles There is one primary pipe in the inner unit for leaving water and another for returning water. The primary pipe for the leaving water is divi...
I would like to ask another question if anybody knows. My heat pump is connected to two houses. One on the second floor (130sq.m) and another one on t...
Good morning. After many days and trials I managed to find out what happens at least with the code 9-02 (Thermo on-off admission). If, for instance, I...
- 27 Forums
- 2,745 Topics
- 64.5 K Posts
- 275 Online
- 7,149 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
@davidb I can’t help you with contacts at Vaillant unfo...
By Mars , 60 minutes ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@Ian-S, I actually think this is a pretty reasonable pl...
By Mars , 1 hour ago
-
RE: Who's your electricity provider and what's your tariff?
@toodles I invested on Miele a pair of frodge frozor wh...
By AgentGeorge , 5 hours ago
-
RE: Flushing system, cleaning and inhibitor
Flush and fill all complete. Octopus kindly gave us a...
By Old_Scientist , 5 hours ago
-
RE: Wood burner with ASHP - direct air?
For what it's worth I installed a wood burner in this o...
By BlizzardGreen , 6 hours ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
I think I saw a diagram for an exhaust air dhw tank wit...
By JamesPa , 1 day ago
-
RE: Indevolt Batteries UK Support & Info Thread
Thanks, however that's an answer to a subtly different ...
By JamesPa , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Such elegant symmetry. look at my lumpy bag of...
By Papahuhu , 4 days ago
-
RE: PV and battery long payback - sense check query
Quite probably not, but you can get a 32A relay and a S...
By JamesPa , 4 days ago
-
I don't notice mine defrosting, and most of the time Im...
By JamesPa , 5 days ago
-
RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Kind of you, @calumm, but it was @f1p who did the heavy...
By Majordennisbloodnok , 6 days ago
-
RE: Electricity price predictions
2. As EV ownershp increases it'll certainly increase de...
By EtchedPixels , 6 days ago


