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Last seen: Aug 13, 2026
@jamespa a picture paints a thousand words… but unfortunately I can’t upload what I’ve set up at the moment 🫤 I just get “undefined”
quick question on likely savings. There have been many people over the past year, shocked and surprised at how quickly heat is lost from a hot water...
@iancalderbank that’s useful to know. Your point on humidity chimes with today’s performance with our heat pump. It’s 2c and our HP is working hard ye...
@mandie could be the batteries on your wireless controller - 2 X AA batteries. Tell tail sign is if your wireless controller will not operate in Auto ...
Our Ecodan data is available on a daily update on the controller and gives a running total for a month or year. However If you want daily COP figures ...
@derek-m you’re welcome... This thread will take a different stance from your data driven modelling in Cathoderay’s thread since it’s obviously diff...
i am at a loss to know how to interpret your comments Derek, You appear to be undermining everything anyone may post on these forums. I was about to ...
What’s your UFH construction? This is a suggestion based on what appears to be a restriction of heat transfer capacity of the UFH fabric, particula...
@toodles this sounds really good. Who knows, this might wake up the installer/manufacturer world to its proper responsibilities. Open : Honest : Custo...
I seem to have most of that list but some extra work on existing thermal mass is needed. If I manage to get some energy data sorted I may come back wi...
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RE: 7kW EV Charger Options Advice
I was hoping that the electrician would route the under...
By Rusty , 5 hours ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
@jamespa @transparent Sorry about that. Here are the ch...
By jon , 5 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Yes, I too am waiting for V2H before I get an E...
By Papahuhu , 7 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
Post by: @old_scientist The first thing I would say ...
By Rob of York , 10 hours ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 16 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv definitely a larger inverter will help and m...
By AndrewJ , 2 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 2 days ago
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 3 days ago
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 3 days ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 3 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 3 days ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 3 days ago
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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 , 6 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
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