Keurig Descale Blinking/Flashing? Fix It Fast With These Tips!

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When you notice the descale light blinking on your Keurig coffee maker, it’s the machine’s way of telling you that it’s time to remove the mineral buildup inside.

This buildup, primarily caused by hard water, can affect the taste of your coffee, the performance of your machine, and ultimately, its lifespan.

Why Addressing the Blinking Light is Important

Ignoring the blinking descale light can lead to several issues:

  • Reduced Efficiency: Scale buildup can clog water lines and affect the heating element, leading to longer brew times and inconsistent coffee temperatures.
  • Poor Coffee Quality: Mineral buildup can alter the pressure and water flow, affecting the extraction process and the flavor of your coffee.
  • Potential Damage: Over time, scale can cause significant damage to the internal components of your Keurig, potentially leading to costly repairs or the need for a replacement.

Preparation for Descaling

Before you begin the descaling process, gather the following materials:

  • Keurig descaling solution or a homemade alternative (like white vinegar mixed with water)
  • A large ceramic mug (do not use a paper cup)
  • Access to a sink
  • Fresh water for rinsing

Safety Tips and Precautions

  • Unplug the Machine: Always unplug your Keurig before cleaning or descaling.
  • Use the Right Solution: Only use solutions recommended by Keurig or a safe homemade alternative.
  • Avoid Contact with Skin and Eyes: Descaling solutions can be irritating. If you’re using vinegar, the smell can be strong, so ensure good ventilation.

Step-by-Step Descaling Instructions

Follow these steps to descale your Keurig coffee maker:

  1. Empty the Water Reservoir: Remove any water from the reservoir.
  2. Add the Descaling Solution: Fill the reservoir with the descaling solution. If you’re using a homemade solution, mix equal parts white vinegar and water.
  3. Place Your Mug: Put the ceramic mug on the drip tray to catch the descaling solution.
  4. Start the Descaling Process: Power on your Keurig and begin the descale mode. Refer to your model’s manual for specific instructions as the process may vary.
  5. Complete the Cycle: Let the machine run through the entire descaling cycle. The descale light should turn off once the cycle is complete.
  6. Rinse Thoroughly: After descaling, empty and thoroughly rinse the water reservoir. Fill it with fresh water.
  7. Run Rinse Cycles: Brew fresh water through the machine several times to remove any residual descaling solution.

Troubleshooting Tips

  • Descale Light Still Blinking: If the light continues to flash after descaling, repeat the process. Persistent issues may require customer support assistance.
  • Machine Not Brewing: Ensure all components are properly seated and the reservoir is filled with water. If the problem persists, descale again or contact support.

After Descaling: What to Expect

After a successful descaling, your Keurig should operate more efficiently, and your coffee should taste better. If the descale light does not turn off automatically:

  • Reset the Descale Light: Some models require a manual reset. Read this article or check your user manual for instructions specific to your Keurig model.

Maintenance Tips

To keep your Keurig in top condition:

  • Use Filtered Water: This can reduce the frequency of descaling needed.
  • Regular Descaling: Follow the manufacturer’s recommendations, usually every 3 to 6 months.
  • Clean Regularly: Regularly clean removable parts and wipe down the machine.

Here are some additional resources that may be helpful:


Q: Can I use any descaling solution for my Keurig?
A: It’s best to use the Keurig brand descaling solution or a safe homemade alternative like a vinegar and water mixture.

Q: How often should I descale my Keurig?
A: Typically, every 3 to 6 months, but this can vary based on water hardness and machine usage.

Q: Can I use vinegar to descale my Keurig?
A: Yes, white vinegar mixed with water is a common homemade descaling solution.

Q: What if the descale light is still on after descaling?
A: Try repeating the descaling process. If the issue persists, contact Keurig customer support.


Regularly addressing the descale light on your Keurig is crucial for maintaining the machine’s performance and ensuring the best coffee flavor. By following the steps outlined in this guide, you can effectively descale your coffee maker and enjoy a better brewing experience.

Have you tried descaling your Keurig? Share your experiences with us. For more maintenance tips or reminders to descale your machine, consider bookmarking out blog.

Michael Smith

Michael Smith is a chemical engineer who specializes in water treatment and descaling solutions. He has a wealth of knowledge on the science behind descaling and the various methods and products available. He is dedicated to educating others on the importance of descaling and maintaining their appliances through his blog, Descaler Genius.

Descaler Genius