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Last seen: Aug 21, 2026
Thanks. One more question, what is the source of your electricity meter readings and do they include anything other than the heat pump?
I do remember the discussion. It would be interesting, at least for me, to try to rationalise the figures. I suspect multiple factors may be in pla...
No problem. Something doesn't make sense and it would be good to get to the bottom of it. The divide by 2000 approach (open university says 2200) ...
Thanks. I am sorry that, with multiple simultaneous threads, I can't remember everything! How quickly and how much did your house cool when you wer...
Not doubting the data, just trying to reconcile your oil consumption with your heat pump consumption whilst assuming your house loss has remained the ...
Doubtless it is the case, for example if you live in an uninsulated barn heated part time, or want to run a heat pump in the same fast and furious way...
If this is the case and you were previously using 10MWh per annum in oil, then your heat pump is running very inefficiently not at a COP of 3, or some...
Agreed, so long as you average over an appropriate period, say 6-24 hrs. If you consider instant heat delivered or heat delivered over a short period...
How did you come to the conclusion you need 12kW (what calculation did you do?). I'm genuinely trying to understand. It doesn't prima face make much...
If you want to run a heat pump inefficiently then of course you will need a higher capacity. How did you come to the conclusion you need 12kW? If ...
Afaik there are two considerations namely pump head and water velocity (causes noise and erosion). A short piece of straight 22mm isn't going to incr...
Seconded. But do you reckon that the average MCS guy is going to give you the choice? My underlying issue is that we are told what we 'must' have by...
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