Machine care: the jobs you only do once a year
Descaling on the interval your water actually dictates, gaskets, shower screens, a pump pressure check, and the point where a service costs less than a repair.
Descaling
Water hardness, scale and the schedule that prevents both before the machine tells you.
Articles
Water is the ingredient nobody tests
Coffee is 98 per cent water. Hardness and alkalinity change extraction more than most equipment upgrades do.