Replace the filter in under five minutes by removing the old cartridge and sliding in a new one

The water filter in a Keurig 2.0 sits inside the reservoir on the left side of the machine. To replace it, you lift the reservoir straight up and off the brewer, locate the filter cartridge inside, twist it counterclockwise to release it, and pull it out. Then you soak the new filter in cold water for five minutes, insert it into the same slot, and twist it clockwise until it stops. The whole process takes about ten minutes from start to finish, including the soak time.

Keurig sells replacement filters under the name Keurig Water Filter Cartridges — they come in packs of two or four and cost between $8 and $15 per pack depending on where you buy them. You can find them at Target, Walmart, Amazon, and directly from Keurig's website. Some grocery stores and drugstores stock them too. The filter should be replaced every two months or after brewing 60 cups, whichever comes first.

Key Takeaways

  • The filter cartridge lives inside the water reservoir and twists out counterclockwise, then a new one twists in clockwise.
  • New filters must soak in cold water for five minutes before you install them, or they will not work properly.
  • Replacement cartridges are sold in packs of two or four and cost $8 to $15 per pack at most retailers.
  • Changing the filter every two months or after 60 cups keeps your coffee tasting fresh and prevents mineral buildup inside the machine.

Step-by-step replacement process

Start by unplugging the Keurig 2.0 or turning it off at the power button. Lift the water reservoir straight up and away from the machine — it sits on top and pulls off easily. Empty any remaining water into a sink.

Look inside the empty reservoir. On the left side, you will see a cylindrical cartridge holder with the old filter inside. Grip the filter cartridge firmly and twist it counterclockwise (to the left) until it stops. It will come free after a quarter turn or so. Pull it straight out and discard it.

Take your new filter cartridge and soak it in a cup of cold tap water for five minutes. This activates the filter material and ensures it works from the first brew. While it soaks, rinse out the inside of the reservoir with clean water.

After five minutes, remove the filter from the water and insert it into the cartridge holder inside the reservoir. Push it in straight, then twist it clockwise (to the right) until it stops. You will feel it seat firmly — do not force it past that point. Refill the reservoir with cold water, slide it back onto the machine, and plug the Keurig back in. Run one full brew cycle with an empty mug to flush the new filter before making your first cup of coffee.

Where to buy replacement filters

Keurig Water Filter Cartridges are widely stocked because the 2.0 model is one of the most common single-serve brewers. You can order them online from Amazon, Walmart.com, or Target.com and have them arrive in two to three days. In-store, check the coffee aisle at Walmart, Target, or your local grocery store — they are usually shelved near the K-Cups or coffee makers.

Keurig's official website sells them directly, and you can set up a subscription to have filters shipped to you every two months. This costs slightly more per filter than buying a four-pack at a big-box retailer, but it removes the step of remembering to reorder. Third-party filters made by brands like Aqua Crest or Waterdrop also fit the Keurig 2.0 and are sometimes cheaper, though Keurig's own cartridges are the most reliable choice.

Why filter replacement matters for your machine

The filter removes chlorine, sediment, and other minerals from tap water before it reaches the heating chamber. Over time, minerals build up inside the machine even with a filter in place — this is called scaling. A clogged or old filter speeds up scaling and makes your coffee taste flat or off. Replacing the filter on schedule keeps the water clean and extends the life of your brewer.

If you skip filter changes, mineral deposits will eventually block the water lines inside the machine, and you may see error messages or slow brewing. Descaling the machine (a separate process using a citric acid solution) can clear some buildup, but regular filter changes prevent the problem from starting. The filter is the cheapest maintenance item on the machine and the easiest way to keep it running well.

Signs your filter needs replacing sooner

Even if you have not hit the two-month mark, replace the filter if your coffee suddenly tastes bitter, stale, or like chlorine. These are signs the filter is saturated and no longer removing impurities. You may also notice the water flowing through the machine more slowly than usual, which suggests mineral buildup is accelerating.

If you live in an area with very hard water (high mineral content), you may need to change the filter every four to six weeks instead of every two months. Hard water is common in the Southwest and parts of the Midwest — if your tap water leaves white deposits on faucets or in kettles, you have hard water and should replace filters more often. Conversely, if you brew fewer than 30 cups per month, you can stretch the filter to three months without problems.

Troubleshooting a stuck filter cartridge

If the old filter will not twist out, it may be stuck due to mineral deposits or a tight seal. Do not force it — you can crack the cartridge holder inside the reservoir. Instead, fill the reservoir with hot water and let it sit for 15 minutes. The heat softens mineral buildup and makes the cartridge easier to turn. Then try twisting counterclockwise again with a firm, steady grip.

If it still will not budge, wrap a dry cloth around the cartridge for better grip and try again. If the cartridge breaks or the holder cracks, you will need to replace the entire reservoir — contact Keurig customer service for a replacement part. This is rare, but it happens if the filter is forced too hard or left in place far longer than recommended.

Frequently Asked Questions

Can I use the Keurig 2.0 without a water filter?

Yes, the machine will brew without a filter installed, but it is not recommended. Unfiltered tap water will cause mineral scaling inside the machine much faster, shortening its lifespan and affecting taste. If you run out of filters, order a new pack right away rather than brewing without one for more than a day or two.

Do I have to soak the new filter before installing it?

Yes. Soaking activates the filter material and removes air pockets that would otherwise cause weak brewing or uneven water flow. Skip this step and your first few cups of coffee will taste off or weak. Five minutes in cold water is all you need.

What happens if I install the filter upside down?

The cartridge is designed to fit only one way, so it will not seat properly if you try to insert it backwards. You will feel resistance when twisting. If this happens, remove it, flip it around, and try again. There is no damage if you catch it right away.

Are generic water filters as good as Keurig brand filters?

Keurig's own cartridges are the safest choice because they are tested to fit and perform in the 2.0 model. Third-party filters like Aqua Crest work for many users and cost less, but they vary in quality and fit. If you try a generic filter and notice slower brewing or taste issues, switch back to Keurig brand.

How do I know when it is time to replace the filter?

Replace it every two months or after 60 brewed cups, whichever comes first. Many Keurig 2.0 models have a filter indicator light on the display that reminds you. If your machine does not have one, set a phone reminder for two months after installation. Hard water users should replace filters every four to six weeks.