ECM Synchronika II

MakerECM
BoilerDual boiler
Brew boiler0.75 L
Steam boiler2 L
Water tank2.8 L
Plumb-inSwitchable
Voltage (US)115V
Maker's water filterWater filter cartridge AC100027-00 (in the tank)

What water does this machine require?

ECM publishes one limit our water check uses for this machine. It is quoted in the maker's own words below.

Water limits for the ECM Synchronika II
WhatThe maker's limitWhere it comes from
Total hardnessat most 71.4 ppm (our conversion of the maker's 4 °dH)Written for this model. The maker's words for Total hardness.

Will my water work with this machine?

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Check my water for this machine

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.

  • Hardness, highest: up to 4 °dH

    “To protect your machine from limescale damage, only use water that‘s not too hard, with a hardness level of up to 4° dH.”

    ECM Synchronika II user manual (Synchronika-II-2505-web.pdf, ecm.de), English section, 'Important', PDF page 37. Source (opens in a new tab), saved October 27, 2026.

  • Descaling

    “A calcified machine should only be descaled by a qualified technician in our authorized dealer as it may require partial disassembly of the boiler and tubing to prevent clogging of the entire system by limescale residues. Delaying descaling can result in significant damage to the machine.”

    ECM Synchronika II user manual, item no. CM100012-00, 05-2025 (Synchronika-II-2505-web.pdf, ecm.de), English section, 'Important', PDF page 37. Source (opens in a new tab), saved October 28, 2026.

  • Water filter

    “You can also use a water filter cartridge (item no. AC100027-00) in the water tank (under the water tank lid) to help reduce limescale in the water and protect your espresso machine from limescale.”

    ECM Synchronika II user manual, item no. CM100012-00, 05-2025 (Synchronika-II-2505-web.pdf, ecm.de), English section, 'Important', PDF page 37. Source (opens in a new tab), saved October 28, 2026.

  • Water type

    “Water tank machines or machines in water tank use: Do not operate the machine with carbonated water, but with soft, potable water.”

    ECM Synchronika II user manual, item no. CM100012-00, 05-2025 (Synchronika-II-2505-web.pdf, ecm.de), English section 2.1 general notes list, PDF page 36. Source (opens in a new tab), saved October 28, 2026.

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