MediumRoastSteam Lelit MaraX, as it also has the overheating technique at the start, hearing the water to 140C? Isn’t that ready in 15 minutes? If so, why not? MaraX review says it heats up in 24 minutes, that’s 40% slower than the Bianca.
Assuming the MaraX group is largely the same as the Bianca, the answer is:
- MaraX single boiler, capacity 1.8 l, 1400 W element = 778 W/l
- Bianca double boiler, brew boiler capacity 0.8 l, 1000 W element = 1250 W/l
The group is heated by the (brew) boiler water, not directly, so that’s what matters (and an efficient thermosyphon).
To the second question (“generic” HX machine) - I suspect much the same stuff is in play, and they generally have large(ish) boilers and groups, both to provide steam capacity and some temperature stability.
