How To Descale Keurig K-Slim? Using Solution & White Vinegar

Descaling Keurig K-Slim never takes more than 30 minutes, but many people feel this job is too hectic or tedious. But with this guide, you can do this job quickly and efficiently. 

So how to descale Keurig K-Slim? Typically there are two best methods to descale Keurig K-slime. 

  1. Using a descaling solution, descale your machine.
  2. Your machine can be descaled with white vinegar.

Both methods work best, but I prefer the descaling solution as it takes less time. 

Descaling your Keurig coffee machine with a mixture of water and white vinegar or a descaling solution can help remove mineral buildup and keep your machine running smoothly. It’s essential to rinse the machine thoroughly with clean water after descaling to ensure that there’s no residual vinegar flavor in your coffee.

Additionally, it’s recommended to descale your Keurig coffee machine every 3 to 6 months or whenever you notice that your coffee should be tasting better.

A Step-by-Step Guide on How To Descale Keurig K-Slim

How To Descale Keurig K-Slim?

Method 1: Descaling With Commercial Descaling Solutions

Regular descaling of your Keurig K-Slim can help your machine last longer and ensure you get the divine and yummiest coffee. Here are the steps you can follow to descale your Keurig K-Slim:

  1. Empty the water reservoir: Remove any leftover water from the water reservoir and discard it. 
  2. Add the descaling solution: Add Keurig descaling solution or a solution of equal parts water and white vinegar to the reservoir.
  3. Run a brew cycle: Place a large mug on the drip tray and start a brew cycle without a K-Cup. Let the descaling solution run through the machine and into the mug.
  4. Repeat the process: Repeat the brew cycle several times with the same solution until the water reservoir is empty.
  5. Cleanse the reservoir of water: Run several brew cycles with fresh water in the water reservoir until the vinegar or descaling solution taste disappears.
  6. Wipe the exterior: Use a damp cloth to wipe the machine’s exterior to remove any residue.
  7. Add water into the water reservoir: To clean the machine’s inside, fill the water reservoir with clean water and run one or two brew cycles.

Now that it has been descaled, you can use your Keurig K-Slim! Depending on your usage, your machine should be descaled every three to six months.

Method 2: Descaling With White Vinegar 

The second method to descale is a water and vinegar 50\50 solution.  

  • To fill the water reservoir, white vinegar, and water should be mixed in equal proportions.
  • Put a large cup on the drip tray and select the largest cup size.
  • Start the brewing process, and allow the vinegar and water solution to run through the machine entirely.
  • Empty the water reservoir and wash it out thoroughly with fresh water.
  • Fill the reservoir with fresh and clean water, and repeat the brewing process until all the vinegar solution is cleared.

Frequently Asked Questions (FAQs)

How Much Vinegar is Required for Descaling?

A 1:1 ratio of water and vinegar should be used for the descaling purpose. It is recommended to clean thoroughly after descaling with vinegar so that all vinegar washes away thoroughly.

How Often Should you Descale Keurig K-Slim?

It’s recommended to descale your Keurig coffee machine every 3 to 6 months or whenever your coffee is not tasting as good as it should. However, you may need to descale your Keurig machine more frequently if you have hard water or use it frequently.

It’s always a good idea to refer to the manufacturer’s instructions for specific descaling recommendations for your Keurig K-Slim.

What if Keurig K-Slim Descale Light Remains ON After Descaling?

If the Keurig descaling light remains on after descaling, it could be due to several reasons.

  • First, ensure you followed the instructions correctly and used the recommended descaling solution. If you didn’t follow the instructions correctly, you should repeat the descaling process.
  • If you did everything correctly, the descaling light might malfunction. Check to see if the light is reset by unplugging the appliance for a few minutes and then plugging it back in.
  • If the light remains on, contact Keurig customer service for assistance.

Watch This Video: How To Descale Keurig K-Slim?


Descaling your Keurig K-Slim coffee machine is an important maintenance step to remove mineral buildup and keep your machine running efficiently. Regular descaling and cleaning of the water reservoir and water path are essential maintenance steps to keep your Keurig machine running smoothly and producing great-tasting coffee.

Using a mixture of water and white vinegar or a descaling solution is a standard method to descale the machine. However, it’s essential to thoroughly rinse the machine with clean water after descaling to ensure that no residual vinegar flavor remains in your coffee.

It’s also recommended to descale your Keurig machine every 3-6 months or whenever you notice a coffee’s taste or performance decline.

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