KitchenAid refrigerators use one of two filter types, and the one you need depends on your model's year and door design

KitchenAid makes two main water filter styles: the UKF8001 side-by-side filter (a thin cartridge that slides into the door) and the UKF9001 French-door filter (a larger cartridge that usually sits in the upper right corner of the fridge). The easiest way to find yours is to look inside your refrigerator door or upper compartment for the existing filter—it will tell you the model number printed on it. If you cannot find a filter, check your refrigerator's manual or the model number plate (usually on the back wall or inside the door frame) and search KitchenAid's website for your specific refrigerator model.

Both filters remove chlorine taste and odor, sediment, and some contaminants from your water and ice. They are not the same as whole-house filters and do not remove all dissolved minerals or bacteria. Replacement filters cost between $35 and $60 depending on the type, and you should change them every six months or after filtering 300 gallons, whichever comes first.

Key Takeaways

  • The UKF8001 is a thin cartridge for side-by-side models; the UKF9001 is larger and fits French-door models, but always check your manual to be certain.
  • You can find your filter type by looking at the existing filter in your refrigerator or by searching your model number on KitchenAid's parts website.
  • Both filters should be replaced every six months or after 300 gallons of use to maintain water quality and prevent ice maker clogs.
  • Replacement filters are sold at appliance parts retailers, big-box stores, and online; buying directly from KitchenAid or a certified parts dealer ensures you get the correct cartridge.

How to identify your KitchenAid filter type

Open your refrigerator and look for the water filter. On side-by-side models, it is usually mounted horizontally in the upper door panel and looks like a thin, rectangular cartridge about 6 inches long. On French-door models, it is typically located in the upper right corner of the fridge compartment (not the door) and is taller and wider than the side-by-side version.

If you see a filter already installed, read the model number printed on it. If there is no filter visible, locate your refrigerator's model number—it is usually a sticker on the back wall of the fridge or inside the door frame—and go to KitchenAid's official parts website. Enter your model number in the search box, and the site will show you which filter your refrigerator uses. You can also call KitchenAid customer service at the number on your refrigerator's manual and give them your model number; they will tell you which filter to order.

UKF8001 filters for side-by-side refrigerators

The UKF8001 is KitchenAid's standard filter for side-by-side models. It is a thin, white cartridge that slides horizontally into a slot in the upper door panel. To replace it, push the filter gently to the right until it clicks and pops out, then slide the new filter in from the left until it clicks into place. The whole process takes less than a minute and requires no tools.

Before you install a new filter, run water through the dispenser for 30 seconds to flush air from the line. This prevents sputtering and ensures the filter seats properly. Some people also run water for a few seconds after installation to clear any loose carbon particles from the new cartridge.

UKF9001 filters for French-door refrigerators

The UKF9001 is a larger cartridge designed for French-door and bottom-freezer KitchenAid models. It sits vertically in the upper right corner of the refrigerator compartment, usually behind a small cover or access panel. To replace it, open the cover, grip the filter firmly, and twist it counterclockwise about a quarter turn until it releases. Pull it straight out, then insert the new filter by aligning it and twisting clockwise until it stops.

Like the UKF8001, you should run water for 30 seconds after installing a UKF9001 to flush the system. If water leaks from the connection point after installation, the filter may not be twisted far enough. Remove it and twist it another quarter turn clockwise, then test again.

Where to buy replacement filters

Replacement UKF8001 and UKF9001 filters are sold at most appliance parts retailers, including Lowe's, Home Depot, and Best Buy. You can also order them directly from KitchenAid's website or from online retailers like Amazon. Prices vary slightly by retailer, but expect to pay $35 to $60 per filter. Buying from KitchenAid or a certified parts dealer guarantees the filter is genuine; counterfeit filters exist and may not fit properly or filter water effectively.

Some retailers offer subscription services that deliver a new filter every six months automatically. This can be convenient if you tend to forget when to replace your filter, though it costs slightly more than buying filters individually. Check whether your retailer offers this option when you make your first purchase.

Common mistakes when replacing your filter

The most frequent error is buying the wrong filter type. Always verify your model number before ordering. Ordering a UKF9001 for a side-by-side refrigerator will not fit, and vice versa. If you are unsure, call KitchenAid or your retailer before you buy.

Another common mistake is not flushing the system before and after installation. Skipping this step can leave air bubbles in the line, causing the water dispenser to sputter, or allow loose carbon particles into your water. It takes only 30 seconds and prevents frustration later.

Do not wait until water stops flowing to replace your filter. Once a filter is clogged, it can damage the water pump or allow bacteria to grow inside the cartridge. Replace your filter every six months even if water is still flowing; the filter may look fine but no longer be removing contaminants effectively.

How often to replace your filter and why it matters

KitchenAid recommends replacing your filter every six months or after 300 gallons of water use, whichever comes first. If you use your water dispenser and ice maker heavily, you may need to replace it more often. A clogged filter reduces water pressure, makes ice cubes smaller, and allows sediment and chlorine taste to return to your water.

Replacing your filter on schedule also protects your refrigerator's water pump. When a filter becomes too clogged, the pump has to work harder to push water through, which can shorten its lifespan. A new filter costs $35 to $60; a replacement water pump costs several hundred dollars and requires a service call.

Frequently Asked Questions

Can I use a third-party filter instead of a KitchenAid filter?

Some third-party filters fit KitchenAid refrigerators and cost less than official KitchenAid filters. However, they may not filter as effectively or fit as securely. If you choose a third-party filter, make sure it is specifically designed for your model number and has good reviews from other users with the same refrigerator.

What happens if I install the filter backwards?

If you install a UKF8001 backwards, it will not slide all the way in and will not click into place. If you install a UKF9001 backwards, it will not twist into the socket. In both cases, water will not flow. Remove the filter, flip it around, and try again. There is no harm in attempting installation backwards; the filter straightforward will not seat.

Why is my water dispenser sputtering after I replaced the filter?

Air is trapped in the water line. Run water through the dispenser for 30 to 60 seconds without stopping. The air will push out and water will flow normally. If sputtering continues after a full minute, remove the filter, check that it is installed correctly, and reinstall it.

Do I need to turn off my refrigerator before replacing the filter?

No. You can replace the filter while the refrigerator is running. However, some people prefer to turn it off to avoid water spraying if the line is pressurized. If you do turn it off, wait five minutes before opening the door to let pressure release.

Can I use my ice maker and water dispenser right after installing a new filter?

Yes, but run water through the dispenser for 30 seconds first to flush the system. After that, your ice maker and water dispenser are ready to use. The first batch of ice may taste slightly of carbon; this is normal and will clear after a few batches.