De'Longhi La Specialista Opera

MakerDe'Longhi
BoilerThermoblock
Brew boilerNot listed
Steam boilerNot listed
Water tankNot listed
Plumb-inNot listed
Voltage (US)120V
Maker's water filterWater filter applicable (charcoal, per the page)

What water does this machine require?

De'Longhi hasn't published a limit our check can use for this machine yet, so the check can't give it a result. Whatever the maker does say is quoted below.

Will my water work with this machine?

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The maker's water guidance

What the maker says this machine needs from its water. This is machine care, not drinking-water advice.

From De'Longhi's guidance for this model.

  • Hardness setting

    “The machine can also be programmed according to the actual hardness of the local water supply, in which case descaling may be required less frequently.”

    EC9555 Coffee Maker instructions for use (US/Canada, EN-FR), De'Longhi asset 293294, PDF dated Dec 2023, PDF p. 12, 9. Water hardness. Source (opens in a new tab), saved October 28, 2026.

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Specs read from the maker's or seller's page.