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Last seen: Sep 20, 2026
How well balanced is the LLH . Unless perfectly balanced they have the potential to cost 15% or more in efficiency and 5C in flow temperature. If y...
Have you got a buffer tank with 3 or 4 ports? Do you know what temp the flow gets down to during defrost?
@davidnolan22 Couple of questions/ideas Are you operating any kind of noise reduction mode Have you got all rads permanently on, no trvs ...
@gary Thats really interesting. My Vaillant takes (I think) a different approach and whacks the compressor up to 100% modulation immediately after...
Have you got any plots from melcloud showing how it works during recovery from defrost. I have heard an argument that, if you have lots of fancoils,...
I would be careful with that presumption. Minimum volume is at least in significant part about defrost, and what matters is the minimum volume availa...
It sounds rushed to me but also that it may not be possible to question the direction. I hope you are lucky! Since he has been doing it this way fo...
Caleffi speak in one of their tutorials about the benefits of a 3 pipe buffer. Someone else may have taken the trouble to understand it. As always ...
Sorry but fundamentally you have to. The rate at which energy is absorbed by the emitters is determined by the flow temperature and the pipe area ...
OK. I think your theory, if it applies at all, applies to a small minority of use cases. The vast majority of our housing stock doesn't have UFH an...
Yes, its the 'integral' term in a proportional - integral - differential' controller. Vaillant actually call it the 'energy integral', the units are ...
Vaillant have the same concept. Basically its the sum (actual FT - target FT) * Time. So if the actual FT is 30 and the target 35 and this remains t...
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 3 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 , 7 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 , 1 day ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I wouldn't be too concerned about the design ...
By Rob of York , 1 day 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 , 1 day ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 1 day 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 , 1 day ago
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RE: Why are ASHP installs so expensive?
Posted by: @batpred There´s another aspect that coul...
By Rob of York , 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 , 2 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 , 2 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 2 days ago
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My feed of random industrial auctions turned up this au...
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
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