Replace the Filter in Four Steps

The KitchenAid Water Filter 2 (also called the Filter 2 or WF2) slides into a cartridge housing on the side or bottom of your refrigerator. To replace it, you locate the filter head, push or twist the old cartridge out, slide the new one in, and reset the filter light on your control panel. The whole job takes about five minutes and requires no tools.

The filter removes chlorine taste, sediment, and some odors from your water and ice. When the light on your fridge turns red or amber, or after six months of use (whichever comes first), the cartridge is exhausted and needs replacement. Using an expired filter does not damage the fridge, but water quality drops and the filter works harder than it should.

Key Takeaways

  • The Filter 2 cartridge twists counterclockwise out of the housing and slides straight back in—no special tools or plumbing knowledge required.
  • You must reset the filter indicator light after installation, or it will not track the new cartridge's life and will not alert you when it expires.
  • The filter housing location varies by model: check your refrigerator's manual or the inside of the fridge door to find whether it is on the side wall, bottom grille, or inside the fridge itself.
  • Replacement cartridges are sold under the KitchenAid brand and by third-party manufacturers, and both types fit the same housing.
  • The first time you use a new filter, run water through the dispenser for 30 seconds to flush air and carbon dust from the cartridge.

Locate Your Filter Housing

The Filter 2 housing is a cylindrical or rectangular plastic unit about 4 to 6 inches long. On most KitchenAid models, it sits in one of three places: on the interior side wall (usually the right side), inside the bottom grille behind the kick plate, or mounted inside the fridge near the top of the back wall. Open your refrigerator door and look for a white or black plastic cartridge that sticks out slightly from the wall.

If you cannot find it by looking, check the owner's manual or the inside of your fridge door—many models have a diagram showing the filter location. You can also search your model number (printed on a sticker inside the fridge, usually on the back wall or side) plus "water filter location" online. Once you know where it is, you are ready to remove the old cartridge.

Remove the Old Cartridge

Turn off the water supply to your refrigerator if your model has an inline shut-off valve (usually under the sink or behind the fridge). This step is optional but prevents water from dripping while you work. If you skip it, have a towel ready to catch any residual water.

Grip the cartridge firmly and turn it counterclockwise (to the left) about a quarter turn. You should feel it loosen. Continue turning until the cartridge comes free—it may take two or three full rotations. Some cartridges twist out smoothly; others require steady pressure. Do not force it or yank sideways, as you can crack the plastic housing. Once it is loose enough, pull it straight out and away from the fridge.

Water may drip from the cartridge or the housing opening. This is normal. Let it drain into a cup or towel, then set the old cartridge aside for recycling if your area accepts plastic water filters.

Install the New Filter 2 Cartridge

Remove the new Filter 2 cartridge from its packaging. Some cartridges come with a plastic cap on the inlet end (the end that faces into the housing). If yours has one, twist or peel it off before installation. Do not install the cartridge with the cap on, or water will not flow through it.

Hold the new cartridge so the inlet end (the narrower or threaded end) points toward the housing opening. Align it with the opening and push it straight in until you feel resistance. Then turn it clockwise (to the right) about a quarter turn until it stops. You should hear or feel a slight click when it seats fully. Do not over-tighten—a snug quarter turn is enough. If it does not turn easily after a quarter turn, it is seated correctly and you are done.

Turn the water supply back on if you shut it off. Run water through the dispenser for 30 seconds to flush the new cartridge. The water may look slightly cloudy or gray at first—this is carbon dust from the filter media and is harmless. Keep running water until it runs clear.

Reset the Filter Indicator Light

Your KitchenAid refrigerator tracks filter life with a light or digital counter on the control panel or inside the fridge door. After you install a new cartridge, you must reset this indicator, or it will continue counting down from the old filter's remaining life and will not alert you when the new one expires.

The reset method depends on your model. Most commonly, you hold down a button labeled "Filter Reset," "Water Filter," or a water droplet icon for three to five seconds until the light changes color (usually from red or amber back to blue or green) or a confirmation beep sounds. Some models require you to press the button twice in quick succession. Check your owner's manual or the control panel itself—many fridges print the reset instructions right on the button or nearby.

If you cannot find the reset button or instructions, search your model number plus "filter reset" online. Resetting takes less than a minute and is the most commonly forgotten step. If you skip it, the light will turn red again in a few weeks even though your filter is new, and you may replace a good cartridge by mistake.

Troubleshooting Common Problems

Water leaks from the housing or cartridge. Turn off the water supply and remove the cartridge. Check that the inlet cap was removed from the new cartridge—if it is still on, take it off and reinstall. If the cap was already off, inspect the rubber seal (gasket) inside the housing opening. If it looks cracked, dried out, or missing, it may need replacement. Some housings have a replaceable gasket; others do not. Consult your manual or contact KitchenAid support with your model number.

The cartridge will not turn or feels stuck. Do not force it. Turn it back counterclockwise to loosen it, then try again with a firm but steady grip. If it is truly stuck, wrap a rubber band or cloth around the cartridge for better grip. If it still will not budge after several attempts, the housing may be damaged or the cartridge may be the wrong size for your model. Check that you ordered a Filter 2 (not Filter 1 or another type) and that your model number matches the cartridge packaging.

Water tastes the same or worse after replacement. Run water through the dispenser for a full minute to complete the flush. If the taste does not improve after that, the old cartridge may have been expired for a long time and allowed sediment to build up in the lines. Run water for several minutes to clear the system. If the problem persists, the cartridge may be defective—contact the manufacturer or retailer for a replacement.

The filter light did not reset or turned red again when ready. Make sure you held the reset button long enough (usually three to five seconds) and that the light actually changed color or beeped. If it did not respond, try the reset again. If the light still does not reset, your control panel may have a malfunction unrelated to the filter cartridge. Contact KitchenAid support with your model number and a description of what happened.

When to Replace Your Filter 2

Replace the Filter 2 cartridge every six months, or sooner if the indicator light turns red or amber. Some households use more water than others, so your filter may expire faster or slower than six months depending on how much water you dispense and how much sediment is in your tap water. If you notice the water tastes off, smells like chlorine, or the ice looks cloudy, the filter may be expired even if the light has not changed yet.

If you do not use the water dispenser often, replace the cartridge at least once a year. Filters can harbor bacteria if they sit unused for long periods, and the carbon media can become less effective over time even if water is not flowing through it. Marking your calendar or setting a phone reminder for six months after installation helps you remember.

Frequently Asked Questions

Can I use a third-party filter instead of the official KitchenAid Filter 2?

Yes. Many manufacturers make compatible Filter 2 cartridges that fit the same housing and work the same way. Third-party filters are often less expensive than KitchenAid brand cartridges. Check the product description to confirm it is labeled as compatible with Filter 2 or your specific refrigerator model number before ordering.

What happens if I forget to reset the filter light?

The light will continue counting down from where the old filter left off. You may see the light turn red again in a few weeks even though your new cartridge is fresh. This does not harm the fridge or the filter—it just means the indicator is inaccurate. Reset it as soon as you remember, and it will track the new cartridge correctly going forward.

Do I need to turn off the water supply before replacing the filter?

No, but it is a good idea. Turning off the supply prevents water from dripping while you work and makes the job cleaner. If your fridge does not have a shut-off valve or you cannot find it, you can replace the filter without shutting off the water—just be ready with a towel to catch drips.

How do I know if I have a Filter 2 and not a different type?

Look at the cartridge currently in your fridge or check your owner's manual. The Filter 2 is cylindrical or slightly rectangular, about 4 to 6 inches long, and usually white or black plastic. The packaging or manual will say "Filter 2" or "WF2." If you are not sure, search your model number online or contact KitchenAid with a photo of your current cartridge.

Can I use the fridge while the filter is being replaced?

Yes, but avoid using the water or ice dispenser while you are actively removing or installing the cartridge. Once the new cartridge is in and you have run water through it for 30 seconds, the dispenser is ready to use again.