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
@iancalderbank Thanks, I’ll ask about checking the y strainer. Chap here the other day said they had that in system as plastic pipes in the system ...
@editor thanks for your reply. Probably doing disservice to plumbers, essentially they’ve been contracted by builder to do the design and install of...
Hi all, first thanks so much for everyone coming in to help! Trying to catchup with everything here. @derek-m Some photos of temps around b...
Thanks both, I’ll ask about a flush of the system tomorrow. note this isn’t really a retrofit as essentially fully new plumbing as part of the proje...
Is it this? in case of use context wise when I took photo ASHP was off as a log burner was run a lot today and all zones hit temp
Realised I had a photo to hand of the outdoor pipe insulation
Thanks Ian, I’ll take pictures in morning in daylight. Looks it be goes in a duct under utility then outside with some pipe insulation over the pipes ...
Thanks I’ll get some pipe insulation. just rechecked - 00 - 38, probe 35. 09 - 45, probe 39.3. if plumber comes tomorrow and replaces LLH I’ll...
@allyfish thanks for this. could you explain the figures in the calculation here: (9/60) x 4.2 x (45-38) are those from the panel results? (...
here are th me results of the codes, and another photo of the probes by LLH for context (it’s heating at this point not hot water cycle) 00 - 38c ...
I can ask them to check this Friday/Monday - or is that something I could look at?
Thanks @allyfish, will get back here tonight with results from the codes. Plumber did try I believe 3 speeds on the pump. To no avail, I couldn’t see ...
- 27 Forums
- 2,753 Topics
- 64.7 K Posts
- 1,127 Online
- 7,158 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: How Accurate Is My DIY Heat Loss Calculation?
@andrewj we already have a 6kw inverter, 8.55kw of sout...
By kilgorexv , 42 minutes ago
-
RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 3 hours ago
-
RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 13 hours ago
-
RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 22 hours ago
-
RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 23 hours ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 24 hours ago
-
RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 1 day ago
-
RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 3 days ago
-
RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 4 days ago
-
RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 4 days ago
-
RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 4 days ago
-
RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 5 days ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 5 days ago
-
@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 5 days ago


