Scale control

Descaling a Home Espresso Machine

Decide when and how to descale by using water hardness, machine design and manufacturer instructions.

By Daniel R. AshcombeReviewed 2026-07-25Educational guide

Do not use a generic schedule blindly

Scale formation depends on water chemistry, temperature and usage. Some boilers and superautomatic systems use specific descaling cycles; some machines should be serviced rather than user-descaled.

Before descaling

  • Read the exact model manual.
  • Confirm that user descaling is permitted.
  • Use the approved product and concentration.
  • Remove or replace filters as instructed.
  • Allow enough time for all rinse cycles.

Prevention is easier

Suitable water and on-time filter replacement can reduce scale. Descaling cannot repair a blocked valve, failing heater or corroded component.

Never mix descaling chemicals with bleach or other cleaners. Keep products labelled, closed and away from children.
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