My old 'roost', South Yorkshire Energy Centre, in Sheffield, is having a clear-out. They have a SMA 'Sunny Boy Control Light' (data-logger) which is supposed to read on-the-spot and cumulative data from the ring-main, but never did on their PV and wind installation. It is 11 years old but unused. It ran (or never did!) with a 640W PV array and a 2.5kW wind turbine.

Ditto they have a Baxi EC25 heat recovery fan. I believe it is what became the Vent Axia HR25, but I may be wrong. When I scrounged it from Baxi in 2000/2011 it had a low voltage supply but that seems to have walked. Not sure the guarantee would be valid (!) but it's worth a go.

These are both 'free' to a good home, although SYEC, an energy advice centre with no assured funding stream, would, I am sure, welcome a donation. If they get multiple expressions of interest I imagine they may look at the donation offered! I am sure they would post if postage money is received up-front.



I have them at present. Whisper me if you are interested