Replacing a KitchenAid Filter 2 takes a few minutes and no tools. Press the eject button on the base grille below the doors, slide the spent cartridge out, unscrew the end cap and twist that same cap onto the new filter, then push the new one in until the button springs back out. Finish by running water through the dispenser to purge the air and clearing the filter light. The cap is the step most people miss, and in Southern California kitchens, where tap water runs hard, a fresh cartridge is often the quickest cure for a weak dispenser and skimpy ice.
First, make sure Filter 2 is the right cartridge
KitchenAid names its refrigerator filters by number or letter, and the names do not cross over. Filter 2 is the push-in style that sits behind the toe-kick grille at the bottom front of the cabinet, most often on side-by-side refrigerators. Filter 1 and Filter 4 cartridges generally live in a housing inside the fresh-food compartment and turn out by hand, and lettered names such as Filter A fit yet another housing. Shopping by looks alone is how people come home with a cartridge that refuses to lock.
KitchenAid points owners to two places for the correct name: the Accessories section of the owner's manual, and the label printed on the side of the filter you are pulling out. If the manual went missing years ago, look for the model and serial tag instead. Side-by-side units carry it inside the refrigerator compartment on the right-hand wall. French-door, bottom-freezer and top-freezer models have it on the left-hand wall, and double-drawer units hide it inside the top drawer. With that model number, any parts lookup will confirm the filter name before you spend a dollar.
Changing the cartridge, step by step
Lay a dish towel on the floor in front of the grille first, because a few spoonfuls of water always escape.
- Find the round filter cap in the base grille and the eject button next to it. Press the button firmly and the cartridge pushes partway out on its own.
- Pull the old filter straight toward you, keeping it level so the water inside stays put until you reach the sink.
- Turn the cap on the end of the old filter counterclockwise and remove it. Do not throw it away: the cap is part of the refrigerator, and new cartridges usually come without one.
- Line up the ridge on the cap with the alignment mark on the new filter and turn it until it snaps into place.
- Slide the new cartridge into the grille opening, cap facing you, and push until the eject button pops back out. That pop tells you the filter is fully seated. If the button stays in, pull the cartridge and try again rather than forcing it.
Flush the line, reset the light, toss the first ice
A new cartridge is full of air and loose carbon dust. Hold a large pitcher under the dispenser and run water in short bursts for several minutes, until the stream is steady and the spitting stops. Grayish or milky water in the first few glasses is normal and clears quickly. Dump the first couple of ice harvests as well, since the ice maker filled while the new filter was still settling in.
Then clear the reminder. On most KitchenAid dispensers you hold the filter or reset button for a few seconds until the status light changes; your manual shows the exact press for your control panel. KitchenAid's own guidance is to swap the cartridge every 6 months, whenever the indicator comes on, or sooner as needed. Keep in mind that the light runs on a schedule rather than testing anything, so it cannot warn you about a cartridge that clogged early.
What hard Southern California water does to the filter
Whether it is pumped from local groundwater or brought in by aqueduct, tap water across much of Southern California is hard, carrying plenty of dissolved calcium and magnesium. A refrigerator cartridge is a carbon block. It does well against chlorine taste, odors and fine sediment, but it does not soften anything. Minerals pass straight through and slowly crust the dispenser nozzle, the water valve and the ice mold. Whatever the carbon does catch, such as rust flakes from old galvanized pipe or grit stirred up when a street main is repaired, collects inside the cartridge and narrows the flow.
So two kitchens on the same six-month routine can have very different experiences. A house with aging supply plumbing can choke a cartridge well before the reminder, while one with newer lines may run the full interval with no change at all. Judge by the water coming out of the door, not only by the calendar.
Signs of a clogged or mismatched filter
A restricted Filter 2 tends to announce itself in a few predictable ways:
- The dispenser slows to a thin stream, and filling a glass takes noticeably longer than it used to.
- Ice comes out small, hollow or in short half-moons, and the bin takes longer to fill.
- The chlorine or musty taste you bought the filter to remove creeps back.
A wrong or poorly made cartridge shows different symptoms. It will not push fully home, the eject button never pops out, water weeps from behind the grille, or the dispenser delivers nothing at all. A look-alike that is a hair off in size can sit loosely in the housing and drip for weeks before anyone notices the damp floor.
If a correct, freshly flushed filter does not bring the flow back, the restriction is somewhere else: a frozen fill tube in the door, a weak water inlet valve, a kinked supply line behind the cabinet, or low pressure in the house. Those take real diagnosis, and our ice maker repair and refrigerator repair pages explain what a visit covers.
Put KitchenAid's other six-month filter on the same date
If your kitchen also has a KitchenAid over-the-range microwave, its charcoal filter behind the vent grille cannot be washed. KitchenAid says to replace it about every 6 months or when the filter status indicator asks. Changing it the same weekend as the refrigerator cartridge leaves you one twice-a-year chore instead of two you forget. The metal grease filters under that microwave are a separate, monthly job, and mild soap and warm water is all they need.
Owners of built-in KitchenAid refrigerators sometimes ask whether the condenser should be cleaned at the same visit. KitchenAid's answer is that routine condenser cleaning is usually unnecessary on built-ins, with every 6 months suggested only for particularly greasy or dusty homes or heavy pet traffic, and it recommends having a service provider do that work.
When a filter change turns into a repair
Call us if the grille still drips after the new cartridge is seated, the eject button sticks, the housing is cracked, or dispensing stops completely. We work on KitchenAid refrigerators in West Covina, Covina, Arcadia and Glendora, and farther south in Oceanside, Carlsbad, Vista and Escondido. The service call is $89. Reach us at (949) 541-9011 or with the booking button on this page, and see our KitchenAid repair page for the rest of what we handle for this brand.
Common questions
Is KitchenAid Filter 2 the same as Filter 4?
No, they are different cartridges made for different housings. Filter 2 pushes into the base grille at the bottom of the cabinet, mostly on side-by-side models, while Filter 4 is a larger cartridge that usually turns out of a housing inside the fresh-food compartment of French-door refrigerators. Check the name printed on your old filter or the Accessories section of your manual.
How often should a KitchenAid Filter 2 be replaced?
KitchenAid says every 6 months, when the filter indicator comes on, or as needed. In homes with hard water or older supply pipes, a slow dispenser or shrinking ice can show up before the reminder does, and that is a fair reason to change the cartridge early.
Do I need to keep the cap from my old filter?
Yes, keep it. On Filter 2 refrigerators the round cap you see in the grille belongs to the refrigerator rather than the cartridge, and replacement filters normally arrive without one. Twist it off the old filter and lock it onto the new one before pushing the cartridge in.
Why does my water sputter or look cloudy after a new filter?
That is air trapped in the fresh cartridge, and flushing clears it. Dispense water in short bursts into a pitcher for several minutes until the stream runs smooth. Milky water from tiny bubbles clears from the bottom of the glass upward within a minute or so.
Can KitchenAid Water Filter A be used instead of Filter 2?
No, Filter A is a different cartridge name built for a different housing, so it will not stand in for Filter 2. The dependable way to match is the name on the side of the cartridge you are removing, or the filter listed under Accessories in your owner's manual.