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Last seen: Mar 20, 2026
@pash44pump I don't know the procedures in UK, but in Greece every property has an energy certificate, which is the starting point for heating/cooling...
What are the weather compensation settings ? Are you sure the system runs according to these settings ? Are there internal thermostats at low temper...
Which part of the sentence do you consider complete nonsense: "complicated" or "ineffective" ?
Weather compensation is a complicated and ineffective way to control heat pumps. Your house was OK when you were on oil, because oil heater control de...
But this is the whole point of our lengthy and interesting conversation. At this point, I owe to apologize if my English sounded a bit hostile, this w...
@jamespa There are numerous, very detailed, simulators that show the capabilities and benefits of each approach. Further, the delay you mention, is ac...
@jamespa Classical PI controllers need tuning i.e. commissioning. This is difficult to achieve, unless well-trained. This is why weather curves were e...
@jamespa OK. Let me repeat that I started this post because I think the "weather curve" method is odd, outdated and wrong. Here is my reasoning: 1. ...
@cathoderay I don't think (b) is fixed flow temp. Where did you see this ? If this is the case, it destroys all the benefits of an inverter driven pum...
@jamespa You don't need to predict anything. A PI controller effectively does all these.
@jamespa Every house needs a specific heat power to bring it to a set temperature. This means a specific water temperature. If you lower this temperat...
@cathoderay OK. It is difficult to argue through messaging. I ask you to bear with me. There are 3 ways to control a Midea heat pump, but in the 3rd m...
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Degrees of Separation
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@davidb I can’t help you with contacts at Vaillant unfo...
By Mars , 5 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@Ian-S, I actually think this is a pretty reasonable pl...
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RE: Who's your electricity provider and what's your tariff?
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RE: Flushing system, cleaning and inhibitor
Flush and fill all complete. Octopus kindly gave us a...
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RE: Wood burner with ASHP - direct air?
For what it's worth I installed a wood burner in this o...
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
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RE: Indevolt Batteries UK Support & Info Thread
Thanks, however that's an answer to a subtly different ...
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RE: Solar Power Output – Let’s Compare Generation Figures
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RE: PV and battery long payback - sense check query
Quite probably not, but you can get a 32A relay and a S...
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I don't notice mine defrosting, and most of the time Im...
By JamesPa , 5 days ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
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RE: Electricity price predictions
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