The basic cleaning routine for a Krups coffee maker

Clean your Krups coffee maker every week if you use it daily, and after every brew if you want the best taste. The simplest routine takes five minutes: empty the used grounds from the filter basket, rinse the basket and carafe with hot water, and wipe the brew head (the part where water sprays onto the grounds) with a damp cloth. This removes old coffee oils and grounds that build up and make new coffee taste stale or bitter.

For the carafe itself, use warm soapy water and a soft sponge. Krups carafes are usually glass, so avoid abrasive scrubbers that scratch. If you have a thermal carafe instead, the same method works—just dry it promptly so water spots don't show. The filter basket should also be rinsed and dried after each use, because wet grounds left sitting breed mold and mildew.

Key Takeaways

  • Rinse the filter basket and carafe with hot water after every brew to prevent stale coffee taste and mold growth.
  • Run a cleaning cycle with white vinegar or a Krups cleaning tablet once a month to dissolve mineral buildup inside the machine.
  • The brew head—where water sprays onto grounds—should be wiped with a damp cloth weekly to remove dried coffee oils.
  • Descaling takes about 30 minutes and uses either household white vinegar or a commercial descaling product designed for coffee makers.

Monthly descaling with vinegar or cleaning tablets

Hard water leaves mineral deposits inside your Krups machine that slow water flow and make heating less efficient. Once a month, run a descaling cycle to dissolve these deposits. You have two options: white vinegar (the cheapest route) or a Krups cleaning tablet (made specifically for their machines).

For vinegar: Fill the water reservoir with equal parts white vinegar and water. Place an empty carafe on the warming plate. Press the brew button and let the vinegar-water mixture run through until the reservoir is empty. Stop and let the machine sit for 15 minutes. Then refill the reservoir with plain water and run a full cycle to rinse. Repeat the plain-water rinse a second time to remove all vinegar smell.

For Krups cleaning tablets: Drop one tablet into the water reservoir, fill with water to the line, and run a brew cycle into the carafe. Discard the liquid. Repeat with plain water twice to rinse completely. Tablets dissolve faster than vinegar and leave no odor, but they cost more per use.

Cleaning the water filter if your Krups has one

Some Krups models include a charcoal water filter in the reservoir that removes chlorine and odors from tap water. If yours has one, replace it every two months or when water flow slows. The filter usually sits in a holder at the top of the reservoir—pull it straight up to remove it.

Rinse the filter holder under running water before inserting a new filter. If you want to extend the life of your current filter, soak it in cold water for 15 minutes once a week, then rinse and reinstall. This clears trapped sediment without replacing the filter itself. Check your Krups manual to confirm your model has a filter, because not all do.

Cleaning the brew head and spray nozzle

The brew head is the part inside the machine where hot water sprays down onto the coffee grounds. Over time, dried coffee and mineral deposits clog the small holes, which makes water spray unevenly and leaves dry spots in the grounds. Clean it weekly with a damp cloth or soft brush.

To access it, open the top of your Krups and look for the shower-like piece above where the filter basket sits. Dampen a cloth or old toothbrush and gently scrub the holes and the underside. Do not use a hard object that could crack the plastic. If mineral buildup is heavy, soak a cloth in white vinegar and hold it against the brew head for a few minutes, then scrub and rinse with plain water.

Cleaning the carafe and warming plate

Glass carafes can stain from old coffee oils and mineral deposits. For stubborn stains, fill the carafe halfway with warm water, add a tablespoon of baking soda, and let it sit for 30 minutes. Swirl the mixture around and scrub with a soft sponge, then rinse well. Baking soda is gentler than bleach and does not leave a chemical taste.

The warming plate under the carafe collects drips and spills. Wipe it with a damp cloth after each use, and once a month clean it more thoroughly by unplugging the machine, letting it cool, and scrubbing with a damp cloth and a little baking soda if needed. Never pour water directly onto the warming plate—always wipe it by hand.

What to do if your Krups stops brewing or brews slowly

If water no longer flows through the machine, mineral buildup is almost certainly the cause. Run the vinegar descaling cycle described above. If the machine still does not brew after one descaling, run it a second time—heavy buildup sometimes needs two cycles to clear.

If water drips slowly but steadily, the problem is usually a clogged spray nozzle or brew head. Clean the brew head as described in the earlier section, and also check whether the filter basket is sitting properly in its slot. A basket that sits crooked can block water flow. Remove it, rinse it, and reseat it firmly until you hear or feel it click into place.

Frequently Asked Questions

Can I use regular dish soap to clean the inside of my Krups?

No—soap residue can get into the water lines and affect the taste of your coffee. Stick to plain hot water for daily rinsing, and use vinegar or a Krups cleaning tablet for monthly descaling. If you accidentally use soap inside, run several cycles of plain water through the machine to rinse it out.

How often should I replace the water filter?

Replace it every two months if you use the machine daily, or every three months if you use it a few times a week. If your tap water is very hard or chlorinated, replace it more often. Check the filter holder—many Krups models have a small indicator that shows when replacement is due.

Is white vinegar safe to use in a Krups coffee maker?

Yes, white vinegar is safe and effective for descaling. Use equal parts vinegar and water, run it through a full cycle, then rinse twice with plain water to remove the vinegar smell. Some people prefer Krups cleaning tablets because they dissolve faster and leave no odor, but vinegar works just as well and costs less.

What if my Krups leaks from the bottom?

Check that the carafe is seated properly on the warming plate and that the filter basket is not overfilled with grounds. If the leak continues, the seal under the brew head may be worn. This usually requires a replacement part—contact Krups customer service or a repair shop, as it is not a user-serviceable fix.