Using a water filter in your espresso machine is optional. However, water filters reduce impurities in your water and help make your coffee more flavorful.
The water symbol on your display will light up when it is time to change your water filter. We recommend changing the water filter at least every two months.
Purchase cleaners, filters, and accessories, like the Bosch Espresso Machine Water Filter (TCZ7003US), online at the Bosch Accessories Store.
Knowing the hardness of your water helps your espresso machine determine how often it should be descaled.
If your unit comes with a water hardness test strip, briefly dip the test strip in fresh tap water and let drain. After a minute, read the strip using the table shown below. If you use a water softening system, select “Softening device” on your appliance. If your water hardness is higher than 21 °dH, we recommend using pre-filtered water in your water tank to reduce limescale deposits. To purchase our Bosch Espresso Machine Water Filter, find the SKU and link to our online accessories store above.
| Level | Water hardness in gr/gal (US) |
| 1 | 1.0426 - 7.2985 |
| 2 | 8.3412 - 14.597 |
| 3 | 15.64 - 21.896 |
| 41 | 22.938 - 31.279 |
| 1 Factory setting |
If your unit does not come with a water hardness test strip, contact your local water company or supplier to determine the hardness of your water.
The following components are safe to clean using the dishwasher:
• Drip plate
• Drip grate
• Coffee grounds container
• Mechanical fill level indicator
• Milk frother
• Milk dispenser with adapter (800 Series only)
• Drip tray (800 series only)
The following components are NOT safe to clean using the dishwasher:
• Water tank
• Water tank lid
• Aroma lid
• Brewing unit
• Drip tray (300 Series only)
• Beverage dispenser cover (800 Series only)
Need assistance? Contact Bosch Customer Support for tips and troubleshooting at 1-800-701-5231.
At Bosch, we continuously aim to improve our website and the information we provide. We would like to invite you to take part in an optional one minute survey.
If you wish to be contacted by us, please use our regular contact form here, contact Customer Support at (800) 944-2904, or chat online with a Customer Support representative. Thank you.
At Bosch, we continuously aim to improve our website and the information we provide. We could like to invite you to take part in an optional one minute survey.
If you wish to be contacted by us, please use our regular contact form here, contact Customer Support at (800) 944-2904, or chat online with a Customer Support representative. Thank you.
