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: Apr 3, 2026
Yes, but if the radiators aren't even warm... Then it's unlikely the room will be warm either. Quick update. Vaillant have been investigating, no real...
@derek-m It's hard to tell because it's been warmer outside (10 degrees today) and I had to put the heat curve up to 0.9 in order to get any heat in t...
Hi @derek-m - the plumber popped over today so was able to get some readings which are as follows: BufferFlow 34Return 31 Radiator circuitFlow 34R...
@Derek-M what was the solution to this issue?
No not yet, I don't have the right gear to monitor. Just paying £14 a day currently...:(
I don't have equipment to measure the temperature accurately (plumber did the last readings), but with an infrared laser thermometer I'm getting UFH...
@alec-morrow you can see it here. The rads are definitely coming off the bottom two. If switched, won't that mean the UFH is too cold though given the...
First picture uploaded was a bit small.
@colin not that I can see, just a Grundfos pump set to level 3 (highest speed). Pipes feel cold when the UFH is on and warm when it isn't. That valve ...
@colin not that I can see, just a grundfos pump set to level 3 (fastest) @derek-m - here are some photos of the buffer tank. There are four pipes co...
@mattengineer I have been told the radiators have been oversized to the requirements of the ASHP system. The radiator on the landing is a triple radia...
Hi @derek-m There are little caps on top of the manifold, which are between 2.5/3 when the heating is active. I assumed this was litres per minute,...
Latest Posts
-
Thanks for sharing, ours is looking fairly different. ...
By Batpred , 1 hour ago
-
RE: GivEnergy inverter tripping due to over-voltage?
@transparent as you probably know GivEnergy entered adm...
By Tim441 , 1 hour ago
-
RE: Cooling with air to water heat pumps
Very sensible Unfortunately I fear that's too simple...
By JamesPa , 3 hours ago
-
RE: Indevolt Batteries UK Support & Info Thread
Good morning. I just came across your website. Was ho...
By iRadiate , 9 hours ago
-
RE: Failed Heat Pump Install: IWA Claim Rejected
Many of the estimates we received mention IWA and RECC....
By Batpred , 20 hours ago
-
RE: Rural burning – I've had enough
Same here in Finland. It's strictly forbidden ...
By upnorthandpersonal , 20 hours ago
-
RE: Renewables & Heat Pumps in the News
Something worth flagging... we've just published a news...
By Mars , 21 hours ago
-
RE: Renewable Heating Hub Homeowners' Q&A Podcast
The Homeowners' Q&A podcast is back... I've changed...
By Mars , 21 hours ago
-
RE: Anyone concerned about GivEnergy?
I have already signed up with Axle so yes, that takes c...
By KevH , 22 hours ago
-
@batpred Would it pass the airbnb feedback test no. I...
By EtchedPixels , 2 days ago
-
A quick update... we've just launched the beta version ...
By Mars , 2 days ago
-
RE: Who Actually Owns a Heat Pump in Britain? We Asked. Here Is What We Found.
The age part doesn't surprise me - only 25% of UK home ...
By EtchedPixels , 2 days ago
-
RE: Home automation and the cloud; is there a better way?
Nothing you've said there, @etchedpixels, is something ...
By Majordennisbloodnok , 2 days ago
-
I've heard from others living in the vicinity of Derril...
By Transparent , 2 days ago
