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 3, 2026
Yup, I see no reason to artificially pressurize low temperature heating technology, but as far as I can see that's the method most Heat Pumps follow. ...
@jamespa nothing to do with the needed pressure. Current pipework is likely 60 years old, buried in concrete and as such in an unknown condition. C...
It seems to be saying that by separating the systems, then glycol usage can be reduced. I've heard about maintenance issues with anti-freeze valves,...
Thanks, so yeah yours is quite oversized, we are the opposite, we need to keep the huse warmer than the standard.
@judith where it does start to make a differnce is installation cost and noise. Thanks for your reply.
@carpenterstation sounds like what I'm afraid of, hopefully you can get it sorted. Thanks for your feedback.
@bontwoody thanks, do you have any tips for a real world data approach. It does feel a little risky basing my estimate on a single day, unfortunatel...
Useful information thanks, we have a cupboard where all that can go, seems pretty small.
@johnmo not clear the pipes are dodgy, but they could be, nobody can know until after they are pressurized. Right? The only routing is the current...
@bontwoody £300 on a £7k ASHP project isn't really a major issue. The designer will have to size it anyway, my real question is how much efficiency i...
@bontwoody thanks, I see they are supposed to be 90% efficient or more. So maybe if I use that as a rule of thumb, a 45C flow from the ASHP woul...
SPONSORS
Degrees of Separation
Latest Posts
-
The installer visited yesterday and suggested the noise...
By JamesChatz , 8 minutes ago
-
RE: Heat Geek installations: share your experiences
I struggled with this problem as well. An independent t...
By L8Again , 43 minutes ago
-
RE: Heat pump branding. Clever, contemporary… or a bit too much?
I am not here to defend Heat geek or anyone else, but I...
By JamesPa , 52 minutes ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Your house sounds a lot like mine. 2 surveyors each sp...
By JamesPa , 2 hours ago
-
RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
Thats true only if you do the wrong experiment. Done c...
By JamesPa , 3 hours ago
-
RE: How should the Boiler Upgrade Scheme be reformed?
@temperature_gradient Isn't that just describing a regu...
By Prunus , 3 hours ago
-
@etchedpixels I thought about that too, and between ...
By RonV. , 6 hours ago
-
RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 16 hours ago
-
RE: Renewables & Heat Pumps in the News
With regards to the BUS grant raid, I gave it more thou...
By ASHP-BOBBA , 17 hours ago
-
RE: Why are ASHP installs so expensive?
The whole system seems to work on the basis of...
By ian33a , 17 hours ago
-
RE: Missing flow temperature in Heat Geek proposal
Good plan. If you can get half hourly meter readings a...
By JamesPa , 23 hours ago
-
RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
@editor Most certainly. The heat pump was an ideal s...
By Abernyte , 23 hours ago
-
RE: Does anyone have experience of a smart water meter?
Yep I caught our slow leak from a £100 bill rise 8)
By EtchedPixels , 23 hours ago
-
RE: Do You Need a Buffer Tank or Low Loss Header for Underfloor Heating in a Large Property?
@jamespa in some cases, failing the Turing test might b...
By GrahamF , 1 day ago
SPONSORS
