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Last seen: Sep 14, 2026
@jamespa @cathoderay I'm inspired to try out the degree days approach using my data. Gas only power Going step by step, first I've taken the el...
It is interesting to note that while the above graphical method worked very well with a large number of data points, i.e. 182 data points for 6 months...
Here is a further method of calculating heat loss, with thanks to @jamespa and @cathoderay for a lively discussion on another thread. (I've posted it ...
@cathoderay @jamespa I've managed to get some nice results myself based on data from Oct-24 to Mar-25. I will shortly put them in the thread below, ...
@cathoderay I think there is a reasonable argument to simply include the DHW heating in your values. The heat loss calculated will then be for the ...
We had two heat pumps installed without Govt funding. However, they are not necessarily of the type that the poll was intending to ask about. We hav...
Can you add up the energy used for DHW each day? If so then at least for the daily averages, you could get the total heat pump output across all hours...
Posted by @jamespa Id be tempted to buy and splice in a cheap flow rate meter if I really wanted to be certain. I'll do exactly that, thanks. ...
@cathoderay If the heat pump occasionally over produces some extra heat and the indoor temperature rises accordingly, then that will be captured in ...
@cathoderay I have a suspicion that the minimum output of your heat pump may be a factor in the surprising result shown in your latest graph, regardin...
@jamespa Thanks, its good to have a second opinion on this. I'm definitely in the (a) category of try it and see and only make changes to the pip...
@cathoderay Thank you for trying out the simple heat loss calculation that I suggested, the "HTC method". You have some excellent detailed data, whi...
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Degrees of Separation
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No, but the heat pump must be capable of delivering a S...
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