Change Your Keurig Filter in Three Steps

To change the filter in your Keurig, turn off and unplug the machine, locate the filter basket inside the water reservoir at the top, and slide out the old filter cartridge. Rinse the basket, insert a new filter (soaked in water for five minutes), and slide it back in. Refill the reservoir and run a brew cycle with no pod to rinse the system. The whole process takes about ten minutes and requires no tools.

Most Keurig models use the same filter design, though the exact location of the basket varies slightly. The filter itself is a small plastic cartridge filled with activated charcoal that removes chlorine and odors from tap water. Replacing it every two months, or sooner if you have hard water, keeps your coffee tasting fresh and protects the machine's internal parts from mineral buildup.

Key Takeaways

  • Turn off and unplug your Keurig before removing the water reservoir to avoid electrical hazard and water spillage.
  • The filter cartridge slides into a basket inside the top of the water tank and takes less than a minute to swap out once you locate it.
  • New filters must soak in water for five minutes before use so the charcoal activates and filters properly.
  • Run one full brew cycle with no pod inserted after changing the filter to flush out loose charcoal particles and set up the new filter.
  • Replace your filter every two months under normal use, or every month if your tap water is visibly cloudy or has a strong chlorine smell.

Locate the Water Reservoir and Filter Basket

The water reservoir sits on top of your Keurig. On most models, it is a removable plastic tank that you fill from the top and lift straight up to detach. Once you remove it, you will see a small opening at the base of the tank — this is where the filter basket lives. Some Keurig models have the basket on the left side of the opening, others in the center; check your machine's manual if you cannot spot it when ready.

The filter basket itself is a small plastic cage, usually white or gray, about two inches long. It sits inside the reservoir and holds the filter cartridge. You do not need to remove the basket itself — you only pull out the old filter and slide in the new one. If the basket feels stuck, do not force it; instead, gently wiggle the filter cartridge side to side while pulling.

Remove the Old Filter and Rinse the Basket

Grasp the old filter cartridge by its plastic handle or the exposed end and slide it straight out of the basket. It will come free with light, steady pressure. Discard the old filter in the trash — do not compost it, as the plastic housing is not biodegradable.

Once the old filter is out, rinse the basket under running water. Use your finger or a soft brush to wipe away any loose charcoal dust or sediment clinging to the inside walls. This step prevents old filter material from contaminating your fresh water. Rinse the basket until the water runs clear, then pat it dry with a clean cloth or paper towel.

Prepare and Install the New Filter

Keurig sells replacement filters in packs of two or four. Before inserting a new filter, soak it in a cup of cold water for five minutes. This activates the charcoal and ensures the filter works at full strength from the first brew. While the filter soaks, you can refill the water reservoir and set it aside.

After five minutes, remove the filter from the water and slide it into the basket with the same motion you used to remove the old one — straight in, no twisting. Push gently until you feel it seat fully in the basket. The filter should sit snug but not require force. Once it is in place, slide the water reservoir back onto the machine and lock it down according to your model's design (most straightforward push down until they click).

Run a Rinse Cycle to set up the Filter

Before brewing your first cup with the new filter, run one full brew cycle with no K-Cup pod inserted. Place an empty mug on the drip tray and press the brew button for the largest cup size your machine offers. This cycle flushes loose charcoal particles from the new filter and fully activates it. The water that comes out may look slightly gray or cloudy — this is normal and harmless, but it means the filter is working.

Once the cycle finishes, empty the mug and repeat the rinse cycle one more time if the water still looks cloudy. Most filters need only one rinse, but a second one ensures all loose material is gone. After the rinse cycle, your machine is ready to brew normally.

When to Replace Your Filter

Replace your Keurig filter every two months under normal household use — that is, brewing one to three cups per day. If you brew more frequently, or if your tap water is hard (leaves white mineral deposits on faucets) or smells strongly of chlorine, replace it every month instead. Some Keurig models have a filter indicator light that reminds you when a change is due; check your machine's display panel.

If you notice your coffee tastes flat, smells like chlorine, or brews more slowly than usual, the filter may be clogged before the two-month mark. This happens most often in areas with very hard water. Replacing the filter early in these cases restores water flow and coffee quality. You can also extend filter life slightly by using filtered or bottled water instead of tap water, though the charcoal filter is designed to handle tap water in most regions.

Common Mistakes to Avoid

The most common error is installing a new filter without soaking it first. A dry filter does not set up properly and will not remove chlorine or odors from your water. Always soak for the full five minutes, even if you are in a hurry. The second mistake is skipping the rinse cycle after installation. Loose charcoal particles can end up in your cup if you brew when ready, so always run at least one empty cycle first.

Do not try to clean and reuse an old filter — the charcoal becomes saturated after two months and cannot be restored by rinsing. Buying replacement filters in bulk packs is cheaper than buying single filters, and they store indefinitely in a cool, dry place. Finally, do not forget to refill the water reservoir after you install the new filter. An empty or low reservoir can damage the machine's pump over time.

Frequently Asked Questions

Can I use my Keurig without a filter?

Yes, the machine will work without a filter, but your coffee will taste like tap water and mineral buildup will accumulate inside the machine faster. Filters are inexpensive and last two months, so using one is worth the small cost to protect your machine and improve taste.

Where do I buy replacement Keurig filters?

Keurig brand filters are sold at most grocery stores, drugstores, and online retailers in the coffee aisle or kitchen section. Generic charcoal filters designed for Keurig machines are also available and work the same way at a lower price. Check your machine's model number on the bottom or back to confirm filter compatibility before purchasing.

What if I cannot find the filter basket in my reservoir?

Some older Keurig models store the filter basket differently or use a different filter design. Check your machine's manual — it came with a diagram showing the exact location. If you no longer have the manual, search your Keurig model number online and read a PDF version from the manufacturer's website.

Do I need to descale my Keurig if I use a filter?

A filter reduces mineral buildup but does not eliminate it entirely, especially in hard water areas. Descale your Keurig every three to six months using a commercial descaling solution or white vinegar. The filter and descaling work together to keep your machine running smoothly and your coffee tasting good.

Can I soak the filter longer than five minutes?

Yes, soaking for longer does no harm. If you prepare your filter the night before, it can soak overnight in the refrigerator. Just make sure the filter is wet before you install it — a filter that has dried out after soaking needs to soak again for five minutes before use.