ECM Mechanika Max II

MakerECM
BoilerHeat exchanger
Brew boilerNot listed
Steam boiler2 L
Water tank3 L
Plumb-inSwitchable
Voltage (US)110V
Maker's water filter"Make Coffee Yours" water filter set included

What water does this machine require?

ECM 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.

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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 ECM's guidance for this model.

  • Carbonate hardness: 2–6 °dH

    “Only operate the machine with fresh drinking water. Water with a value of 2–6°dH KH* is ideal. If the water hardness is outside this range, it is recommended to use the water filter that comes with the machine in order to minimize limescale deposits in the machine and to improve the taste of the coffee.”

    ECM Mechanika Max II user manual (BA V1.0, ecm.de), English section 9.4 'Filling the water tank with water', PDF page 122. Source (opens in a new tab), saved October 27, 2026.

  • Softened water

    “It is not recommended to use water from ion exchange water softeners (sodium-based) as this may affect the taste.”

    ECM Mechanika Max II user manual, item no. CM100028-00/-01, ECM Mechanika Max II_BA_V1.0 (BA-ECM_Mechanika-MAX-II-web-2604.pdf, ecm.de), English section 9.4 'Filling the water tank with water', 'Please note', PDF page 122 (same note in 7.5.2 'Installing the water filter', PDF page 114). Source (opens in a new tab), saved October 28, 2026.

  • Hardness note

    “Very hard water can lead to limescale deposits and a bitter taste even when a filter is used.”

    ECM Mechanika Max II user manual, item no. CM100028-00/-01, ECM Mechanika Max II_BA_V1.0 (BA-ECM_Mechanika-MAX-II-web-2604.pdf, ecm.de), English section 9.4, 'Please note', PDF page 122. Source (opens in a new tab), saved October 28, 2026.

  • Hardness note

    “Very low carbonate hardness can lead to an acidic taste.”

    ECM Mechanika Max II user manual, item no. CM100028-00/-01, ECM Mechanika Max II_BA_V1.0 (BA-ECM_Mechanika-MAX-II-web-2604.pdf, ecm.de), English section 9.4, 'Please note', PDF page 122. Source (opens in a new tab), saved October 28, 2026.

  • Water filter

    “The water filter does not provide complete protection against limescale.”

    ECM Mechanika Max II user manual, item no. CM100028-00/-01, ECM Mechanika Max II_BA_V1.0 (BA-ECM_Mechanika-MAX-II-web-2604.pdf, ecm.de), English sections 10.4.1 'Filter Reminder' and 12.2, NOTICE, PDF pages 137 and 150. Source (opens in a new tab), saved October 28, 2026.

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