The filter cartridge slides into a holder under the reservoir and takes about five minutes to swap out

Your Keurig 2.0 water filter lives inside the reservoir — the tank that holds your water. To replace it, you lift the reservoir off the machine, locate the filter holder at the bottom, twist out the old cartridge, rinse the holder, drop in a new one, and slide the reservoir back. The whole job takes longer to read about than to do.

You'll need a replacement filter cartridge (Keurig part number 5051140K or a compatible third-party equivalent) and about five minutes. The filter itself doesn't require tools or special knowledge — just a steady hand and lukewarm water.

Key Takeaways

  • The filter cartridge sits in a holder at the bottom of the water reservoir and twists out by hand with no tools needed.
  • Keurig recommends replacing the filter every two months or after 60 tank refills, whichever comes first.
  • Always rinse the new cartridge under running water for 15 seconds before inserting it to remove loose carbon particles.
  • If water leaks from the reservoir after you reassemble it, the filter cartridge may not be seated fully — twist it clockwise until it stops.

What You'll Need Before You Start

Buy a replacement filter cartridge ahead of time. Keurig's official cartridge is part number 5051140K and costs between $8 and $15 depending on where you buy it. Many retailers sell compatible third-party filters at lower prices; these work the same way and fit the same holder, though Keurig does not manufacture them.

You do not need any tools. Have a sink or bowl of lukewarm water nearby to rinse the new cartridge and the filter holder. A dry towel helps, but is optional.

Step-by-Step: Removing the Old Filter

Unplug the machine and wait a few minutes for it to cool. Lift the water reservoir straight up and off the machine — it sits on top and comes away easily. Set it on a counter or sink.

Look at the bottom of the reservoir. You'll see a cylindrical filter holder with a cartridge inside it. Grip the cartridge by its plastic top (the part that sticks out) and twist it counterclockwise. It will come free after a quarter turn or so. Pull it straight out and discard it.

Rinse the filter holder under running water. Use your finger to wipe away any loose carbon dust or sediment inside the holder. This takes 10 to 15 seconds and keeps old particles out of your fresh water.

Step-by-Step: Installing the New Filter

Remove the new cartridge from its packaging. Hold it under running lukewarm water and rinse it for about 15 seconds. This removes loose carbon particles that can cloud your first few cups of coffee. You don't need to soak it or do anything elaborate — just a quick rinse.

Insert the cartridge into the filter holder at the bottom of the reservoir. Push it down gently until it seats, then twist it clockwise. It should turn smoothly and stop after about a quarter turn. Don't force it — if it won't turn, lift it slightly and try again. When it's seated correctly, the cartridge sits flush with the holder and doesn't wiggle.

Slide the reservoir back onto the machine. Make sure it sits evenly and clicks into place. If you hear water dripping, the cartridge may not be fully seated — remove the reservoir and twist the cartridge clockwise a bit more.

When to Replace Your Filter

Keurig recommends replacing the filter every two months or after 60 tank refills, whichever comes first. If you brew one or two cups a day, two months is a reasonable schedule. If you use your machine heavily, you may hit 60 refills sooner.

You can also replace the filter when you notice the water tastes off or when the machine brews more slowly than usual. Sediment buildup in the filter slows water flow, so a sluggish brew is often a sign the cartridge is due for a change.

What Happens If You Don't Replace the Filter

The filter removes chlorine, sediment, and odors from tap water. Over time, a clogged filter stops doing this job. Your coffee may taste flat or chlorinated, and mineral deposits can build up inside the machine's heating element.

A very old filter can also slow the brew cycle noticeably or cause the machine to stop brewing altogether. Replacing it on schedule keeps your coffee tasting fresh and your machine running smoothly. It's one of the easiest maintenance tasks on any Keurig model.

Troubleshooting: Water Leaks or Slow Brewing

If water leaks from the bottom of the reservoir after you reassemble it, the cartridge is not seated fully. Remove the reservoir, twist the cartridge clockwise another quarter turn, and try again. The cartridge should be snug but not forced.

If the machine brews very slowly even with a new filter, the heating element may have mineral buildup. Run a descaling cycle using Keurig's official descaling solution (or white vinegar in a pinch) to clear the lines. Follow the machine's manual for the exact steps, as the process varies slightly between Keurig 2.0 models.

Frequently Asked Questions

Can I use a third-party filter instead of Keurig's official cartridge?

Yes. Third-party filters fit the same holder and work the same way. They cost less and perform the same job of removing chlorine and sediment. Keurig does not endorse them, but they are widely used and compatible with all Keurig 2.0 machines.

What if I can't twist the old cartridge out?

The cartridge may be stuck if the machine is still hot. Unplug it and wait 10 minutes, then try again. If it's still stuck, grip it firmly and twist slowly — do not yank or force it. If it breaks, you may need to contact Keurig support for help removing the pieces.

Do I need to run water through the machine after installing a new filter?

It's a good idea to brew one cup of water without coffee grounds to flush out any remaining carbon particles from the new filter. Discard that cup and brew normally after that.

How do I know if my water is hard or if I need a special filter?

The standard Keurig filter works for most tap water. If your water is very hard (lots of mineral deposits on faucets or in kettles), you may want to descale your machine more often — every month instead of every two months. Keurig does not make a special "hard water" cartridge; the standard filter handles all tap water equally.