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: Nov 9, 2026
You would need to engage someone that is able to calculate and design your system and select the correct pump capacity to open loop a system with an 1...
@bazcurtis Ok, that rules that out then, sometimes if the secondary pump line is not insulated it can register the same losses like you show on the gr...
@bazcurtis you would look to see if there is an additional pump gold or yellow colour normally piped in on the cold water inlet or at the top of the t...
do you have a secondary return pump on the cylinder?
@editor Nice, its about time, we need some professional add ons that help on that side of things to make these systems a bit more cost effective. I ...
You need to work out if the system is leaking on the ASHP circuit or cylinder side, if you need to top up the heating circuits or if its leak...
I am soon going to install and review an Adia Thermal connected to a Vaillant, microbore drops 10mm, no rad changes and no DHW change, they claim prov...
@wanttobegreen Thank you for the honest and kind review. It was our pleasure to work with you and we hope to look after you and your system for the fo...
With regards to line 2, could it be that the (demand) was not met and although the external temp was 21.2c (some solar gain no doubt) the act...
This is likely thread sealant for the pocket plug, very easy fix if it starts oozing out, unless you get an actual leak it is probably fine, what you ...
Your DT is to low, you do not have enough heat exchange would be my 1st thought, it might explain the short cycling. How old is your home as the app...
I don't know Grant system but most ASHP are very similar. The grant controller should act as the only stat on an open loop for best performance and yo...
SPONSORS
Degrees of Separation
Latest Posts
-
What we normally do is set the heat pump to holiday mod...
By Majordennisbloodnok , 34 seconds ago
-
RE: DIY powerflushing tutorial
Yup, it is a bit troubling isn't it! That's why I ran...
By bobflux , 9 minutes ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 19 minutes ago
-
RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
By EtchedPixels , 48 minutes ago
-
RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
By JamesPa , 52 minutes ago
-
RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 5 hours ago
-
Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 6 hours ago
-
RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 9 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 22 hours ago
-
RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 2 days ago
-
RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 2 days ago
-
Six books in three years and I think I’ve now covered j...
By Mars , 2 days ago
-
RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
By Toodles , 2 days ago
-
Grant Aerona - Weather Compensation and Schedules
Im trying to set up a friends Grant Aerona. The WC curv...
By bontwoody , 3 days ago
SPONSORS
