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Last seen: Oct 26, 2026
Posted by: @cathoderay I'm not too worried about the DHW tank losses, the tank is like yours in an airing cupboard, but the airing cupboard is in th...
@cathoderay @jamespa Unfortunately, there was a slip up in my working in some of the earlier posts. When plotting measured power output vs. temp...
@cathoderay I'm pleased to see that your cleaned up data gives consistent results. It's great to see this analysis working in practice. Plotting ...
@judith Thanks for the advice on an air leakage test. It's definitely on the list for the two reasons that you suggest: finding leaks and also havi...
@cathoderay @jamespa I think a positive y-axis intercept is not necessarily an indication that something is wrong when the x-axis values are degree...
@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...
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RE: How will removing the standing charge on gas bills benefit heat pumps?
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