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: Jan 28, 2026
It is bonkers. Especially when the plumber says oh don’t have too big a difference between off and on temps on the zones keep to 2C diff. Sometimes ke...
@mikefl thanks Mike. Can confirm 4 works as expected. Only 2 of the 3 zones have lights on the valves but when hot water mode comes on can see ...
It’s all rather frustrating. Far as I know Grant specifiy the use of a LLH. Thankfully I’m in a ‘fortunate’ unfortunate position. The contract f...
I’m thinking back through the last couple months. If a valve closure could cause this issue of flow being insufficient or its primary flow v secondary...
Yeah I don’t see it being useful at this point lol. Especially as the ASHP is running at 50c and I’m not getting that through. Cost to heat ratio is h...
So no change in heating over night. seems the 3am-4am hot water run worked as that’s sitting at 45c 3.5 hours later. So least we have that. ...
Apologies for string of posts but putting down findings soon as I have them. as was messaging plumber changed second pump speed up one. That then se...
Plumber is going to contact Grant it seems. Just very odd only top left pipe to LLH is hot. All other pipes cool to touch. Can’t workout where t...
No chance of heating. Top left pipe not getting heat whatsoever. Which explains why rads never warm. It’s been nearly 3 hours so I’d expect some rise ...
Yeah not quite sure what’s going on with the flow. Interestingly now I’ve been given more of a tour the flow rate is on the bottom right from the bott...
So no call from Grant yesterday. So I rang up this AM and was told if engineer visits Monday and it’s not manufacturer fault it’s £150 plus £60 an hou...
Plumber's been. Changed fuse for hot water panel, nothing going to it, so that's now on the electrician to come. I asked about the valves closed -...
- 26 Forums
- 2,610 Topics
- 60.8 K Posts
- 1,617 Online
- 6,967 Members
Join Us!
Worth Watching
Latest Posts
-
RE: Electricity price predictions
@colinc @papahuhu Plenty of other outlets of various...
By JamesPa , 14 minutes ago
-
RE: Indevolt Batteries UK Support & Info Thread
I agree entirely, although we may still disagree about ...
By JamesPa , 18 minutes ago
-
I'm still not sure you have fully grasped how WCC works...
By cathodeRay , 40 minutes ago
-
RE: Rate the quality of your heat pump design and installation
@editor Thank you. I joined because I really liked your...
By claireisamazing , 14 hours ago
-
I cant, but @editor probably can if you tell him roughl...
By JamesPa , 15 hours ago
-
RE: Seeking ideas / information / commiseration - Pure Drive
I am way, so a bit late, just sharing a few threads in ...
By Batpred , 15 hours ago
-
RE: UK DIY Battery: SEPLOS 48V 200Ah x2 + Sunsynk 8K – Safe Installation for Garage Conversion
@madsid I don't quite understand what extra you need...
By Bash , 17 hours ago
-
@transparent thank you. Be Thursday before my mate giv...
By David999 , 19 hours ago
-
RE: Peak Energy Products V therm 16kW unit heat pump not reaching flow temperature
@johnd our Peak system is no more. The installer cam...
By DaveC , 19 hours ago
-
Hah! Well I guess we're all in the realm of conjectu...
By Transparent , 21 hours ago
-
These are a bit hard to read but the information is in ...
By bobflux , 1 day ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Ah, not so useful then For sure, hopefully before ...
By JamesPa , 1 day ago
-
Thanks @editor I appreciate that things go wrong, bu...
By venkman , 1 day ago
-
RE: Home energy storage & battery register
AC coupled Pure Drive 10kW battery Solar PV Solis P...
By Little Lights , 2 days ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: ispookie666 Manufacturer: Vaillant Mo...
By ispookie666 , 2 days ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
I'm fairly new to the forum and have not voted. Back...
By ispookie666 , 2 days ago
-
I am seeing an increasing number of occasions when my G...
By DavidAlgarve , 2 days ago
-
RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
@editor Thanks Mars. I look forward to the subsequent ...
By DavidB , 2 days ago
-
RE: Anyone concerned about GivEnergy?
Fair enough. Its interesting that opentherm (for boil...
By JamesPa , 2 days ago
-
RE: Brand and installer questions for ASHP
A tank solely in the return (upstream of where the retu...
By JamesPa , 2 days ago
-
RE: Home automation and the cloud; is there a better way?
+1 It's not just cloud though. Many devices have repla...
By bobflux , 3 days ago
-
RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
By JamesPa , 3 days ago
-
RE: Renewables & Heat Pumps in the News
Critics and naysayers will be negative whatever the gov...
By JamesPa , 3 days ago
-
RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 4 days ago



