and of course the good old fashioned combi.
I missed that. Old fashioned ?, according to a boiler designer the combi is ( he was speaking in late 1970'S ) a new concept beimg developed to provide hot water in flats and modern compact houses where there is no space for cylinders and storage. I got to know him via the Philips Experimental House Project at Eindhoven.
Not when you're a professional, and not when you make specific claims like it "equates to a 48 kW combi boiler",
This sort of equates to a 48 kW combi boiler providing "instant" hot water for the shower.
30 minutes @ 16 kW = 8 kW hr
10 minutes @ 48 kW = 8 kW hr
You are correct in saying that my system does not give instant hot water for a shower, It does require the boiler to be fired up about 30 minutes before the shower. ( less early for a quick shower ). Amazing things time clocks and remote controls.