How to clean your Keurig coffee maker inside and out | ZDNet

If you’re like me and have a Keurig machine at home, you’ve probably wondered after having made gallons of coffee what kind of crud may have accumulated inside your coffee maker. You can choose avoid the topic, but I can’t guarantee that the coffee is dark due to the roast or as a result of all the potential grime in there, or you can learn just how to clean your Keurig.

Whether you use pods or reusable K Cups, a Keurig coffeemaker has many nooks and crannies where buildup and mold could hide, so it’s important to keep it as clean as possible. Whatever runs through your Keurig may also end up in your body, after all. 

Here’s how to clean your Keurig coffeemaker

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Step 1: Wash all removable parts

A Keurig has several removable parts where old coffee grounds can hide. Wash all removable parts with dish soap in the sink, including the water reservoir, mug base, pod holder, and milk steamer, if your machine has one. 

Be very careful with the needles when removing the pod holder. If you want to clean the needles on the brewer, you can use a pin or a paper clip to dislodge any grounds that may be slowing down your machine. I also wipe down the exterior of the brewer at this point.

Step 2: Empty reservoir and fill half with water and half with vinegar

Empty your water reservoir and remove the filter. If your filter is over two months old, it’s probably time to replace it with a new one after you finish cleaning your machine. Fill the water reservoir halfway with white vinegar, then top it with water up to the fill line. 

Step 3: Run cycles until reservoir is empty

Place a large mug on the stand and run your Keurig through multiple 8-ounce cycles without inserting a K-Cup, until the water reservoir is empty of the cleaning solution. All the old coffee grounds and mineral buildup inside of the brewer should start coming out into the mug. I found old grounds were still coming out of the Keurig even after the water reservoir was half empty, so it’s important to finish the process.

Step 4: Let it soak in

Once you’ve run all of the vinegar and water mixture out of the reservoir and through the coffeemaker, let what remains of the cleaning solution soak in the inner parts for about 30 minutes, but no more than three hours. 

While the vinegar soaks inside of the Keurig, remove the water reservoir again and wash it well to get rid of any lingering white vinegar but don’t dry the inside of it as you don’t want lint to stick to the inside of it. 

Step 5: Run a few rinse cycles

Reassemble your Keurig and fill the water reservoir with fresh water this time. Run a few cycles with just water to rinse all the white vinegar out from inside the coffee maker. Keurig recommends about 12 cycles of just water after descaling.