Miele CM 7750 CoffeeSelect

MakerMiele
BoilerSuper-automatic, thermoblock
Brew boilerNot listed
Steam boilerNot listed
Water tank2.2 L
Plumb-inNot listed
Voltage (US)120V
Maker's water filterNot listed

What water does this machine require?

Miele 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.

Shown, but not used to decide (1)
  • Total hardness, at most 375 ppm (our conversion of the maker's 21 °dH). Guidance the maker gives as an ideal, a recommendation or a care tier, not as a limit. The maker's words for Total hardness.

Will my water work with this machine?

Add your water from a test strip, a report or your city's numbers, and we'll check it against the maker's limits above. It stays in this browser.

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 Miele's guidance for this model.

  • Total hardness: up to 21 °dH

    “Tip: If your water hardness is > 22 gpg (21°dH), we recommend using bottled drinking water instead (< 150 mg/ l Ca2+ ).”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560, Water hardness / setting the water hardness. Source (opens in a new tab), saved October 29, 2026.

  • Water type

    “Carbonated water leaves too much limescale in the coffee machine.”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560. Source (opens in a new tab), saved October 29, 2026.

  • Water type

    “Do not use carbonated water.”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560. Source (opens in a new tab), saved October 29, 2026.

  • Water type

    “Do not use sparkling water.”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560. Source (opens in a new tab), saved October 29, 2026.

  • Hardness setting

    “The water hardness level is set to 3 at the factory.”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560. Source (opens in a new tab), saved October 29, 2026.

  • Descaling: at least 20 gpg

    “If you use hard water (> 20 gpg) or if the coffee machine is used intensively, it may be necessary to descale the machine manually more frequently.”

    Miele Operating Instructions, Countertop Coffee Machine CM 7750, en-US, CA, M.-Nr. 12 639 560, Descaling. Source (opens in a new tab), saved October 29, 2026.

Where to buy

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