Last seen: Jul 2, 2025
There was a recent thread over on the openenergymonitor forum discussing the issue of Vaillant 7kW unit not being able to deliver anywhere near 7kW (s...
It might do, try it and see? As the majority of your usage is showering, where the hot water will be blended down to ~38C, heating it hotter should ...
Estimating COP for DHW is complicated by the fact that the flow temperate is not constant, but rises steadily over the heating cycle. Manufacturers ...
In the summer you can see another problem, where the pumps will run after 24h of inactivity to prevent pump seizure. This can be a pain if you have a ...
Yes, I already run in the Samsung equivalent Quiet Mode for DHW, which limits output to around 70% and which is more efficient. Now I'm looking at t...
My Samsung system does the same, and it's due to the Samsung Anti-Freeze protection feature. When the OAT is below 5C (risk of freezing) AND the sys...
Surely it is not beyond the capabilities of a government department to sit down with the relevant bodies to weed out the projects that are never going...
As you say, short cycling can occur during milder ambient conditions where the flow temps are reduced and the radiators/emitters then cannot dissipate...
With respect to the original topic in this post, back in the summer I had a 12kW ASHP (permitted development) and 3.645kWp solar array with 3.0kW inve...
Thank you! The solar uptake seems high at 33.3%. The numbers may well be higher, as I know at least one of my neighbours has battery storage, whic...
@transparent Thank you for the great explanation, and for the exchanges today - really appreciate your help in gaining a better understanding of the i...
Latest Posts
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RE: Location of hot water isolation valve on cylinder
@rossowheels if you isolate the water supply in it will...
By ASHP-BOBBA , 4 hours ago
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RE: Ecodan consuming 100kwh per day in new build!!!
From what you say about the radiators upstairs it does ...
By JamesPa , 10 hours ago
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer pleased you found it!
By JamesPa , 11 hours ago
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The Importance of Radiator Balancing for Efficient Heating: Introducing the Flow Regulating Valve
It’s fascinating to watch how low-temperature heating i...
By Mars , 12 hours ago
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@heacol, if you're around, can you please provide some ...
By Mars , 15 hours ago
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RE: Servicing Hitachi HP in rural Somerset
I'd give GreenGenUK a call or email them: sales@greenge...
By Mars , 15 hours ago
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RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 1 day ago
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RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 1 day ago
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RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 1 day ago
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RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
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Have your say in the Renewable Heating Hub Awards
It’s time to celebrate the best (and call out the worst...
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RE: Mitsubishi cycling while on chilled water output
@iaack yes there's no denying that cold air sinks! I s...
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RE: Weather compensated secondary circuits with Biomass
@andycoo that flooring sounds ideal. Extra volume is ...
By Sune , 3 days ago
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If you are thinking of heating on the immersion conside...
By JamesPa , 4 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness, I think your best bet would be using ...
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles all depends on asking the right questions! And...
By Tim441 , 4 days ago
