@toadhall I hope I haven’t reopened a can of worms. There is a recent discussion on a Facebook forum with one member adamant that you need to add consumption to generation before dividing by consumption. His supporting evidence was a post on buildhub by a Samsung user whose generation was less than his consumption. However, subsequent posts from later days showed a generation of 0 despite a warm house, so clearly this was faulty.
There is an entry that implies that Glyn had said something along those lines, although nowhere in this topic does Glyn say this. Could there be some missing comments? Could @glyn.hudson clarify whether he is the author of the ‘heat shifted from the source’ comment please?
I remain of the opinion that Samsung figures for generation can vary widely and should not be relied upon - my Samsung overestimates by 15% compared to my MID approved heat meter and Glyn’s underestimates by 30%.