Test hardness before you buy a filter
A simple strip shows calcium load. Very hard water needs softening or ion exchange — a cheap cartridge left unchanged for months protects nothing.
Cartridge schedule
Follow litres of throughput on the cartridge, not the calendar alone. A café pulling 200 cups/day burns filters faster than a quiet kiosk.
Descaling
Follow the manufacturer’s interval and approved solution. Aggressive acids without thorough rinsing damage seals.
You waited too long if…
Boiler heat-up time rises, unusual noise appears, or group temperature swings — often scale buildup.
Keep reading without leaving the topic.
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