More sensors - and more electrics!

Well the monitoring system referenced below now has an extra batch of sensors connected; it also has 4 buses radiating from the box, which must skew the impedance a bit but it seems to work well. I think this is enough for the moment (we have an independent electric power measuring system - one could integrate temperature and power monitoring using another system which we may try sometime). We have learned a lot but there might be more real added value in knowing the heat output by the GSHP into the house heating (to compare with the electricity used) but this seems quite hard. Independent heat meters exist (for metering heating in collectively-heated blocks of flats) and of course measure water flow (using impellers or ultrasound) as well as temperature and are quite expensive (£100's).

And I have just had ANOTHER call from eon (suppliers) who want to send yet another man to have a look at their newly-installed meter box! It appears that they have got confused between two slightly different versions of our postal address (no matter that we always gave their reference number as well!) and somehow have two accounts. In addition they have somehow got the brand new 3 phase meter with its serial number as here since 2005! Unless they are clever enough to get the old serial number fitted to the new meter (doubtful - and why, anyway?) their system seems as confused as ever. I cannot see what they learn by looking at the meter, either, but they are welcome!