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Last seen: Sep 21, 2026
@jaynieq Thanks for the info and pics. These are of your solar/electrical installation, I was actually looking for the controller etc for the heat pu...
OK I did some very crude energy balance calculations attached. I had to make lots of assumptions, some of which matter to the outcome, many of which ...
@jeegnesh Thanks. One last question then I'll do some back of the envelope calculations tomorrow. Please confirm what times of day you are r...
I dont know, unless water is circulating in the UFH much faster than its coming out of the heat pump so basically its going round and round the UFH be...
@iraknic the buffer tank or pipe losses. It sounds like a classic case of excess mixing in the tank. That said not sure how accurate the or guns are...
@jeegnesh wow . exactly which rooms are too cold if you run at the 'downstairs' flow temperature.
The Vaillant WC interface is actually much more user friendly than most. You can do it without your installer (which doesnt excuse him not helping). ...
I was saying The latter not the former - pick a heat curve suited for upstairs, but see my final comment below before and please respond you do anythi...
Its a complex system, probably over complex to be sensible and certainly too complex to work out what might happen with any certainty if you change op...
You could be right. What do you know of the design/history of the heating system (not the heat pump, the emitter system). Its quite bizarre that the...
Agreed, Put another way it may sometimes be better to heat the house to a slightly higher temperature to avoid cycling. I can easily believe that is...
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Degrees of Separation
Latest Posts
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
I upgraded mine but only because it was vented. Had ...
By JamesPa , 3 hours ago
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Depends on what controls the pump! Thats the whole poi...
By JamesPa , 4 hours ago
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RE: Why are ASHP installs so expensive?
It is a politically motivated myth that our electricity...
By JamesPa , 6 hours ago
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 18 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 22 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 2 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 2 days ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 2 days ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 2 days ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 3 days ago
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RE: Home energy storage & battery register
1 fox ess lv5200 batteries, plus 2 more waiting to be i...
By Jimcub , 3 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 3 days ago
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My feed of random industrial auctions turned up this au...
By Prunus , 3 days ago
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We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 4 days ago
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