Where the filter sits and how to find yours

Most Whirlpool refrigerators have the water filter in one of two places: inside the fridge compartment (usually in the upper right corner or back wall) or underneath the fridge behind the kickplate at the bottom front. Open your fridge and look for a cylindrical cartridge about the size of a soda can, often white or blue, with a release button or twist collar. If you don't see it inside, crouch down and remove the kickplate—a plastic panel that snaps or screws off at the bottom of the fridge—and look for the filter mounted horizontally in the cavity behind it.

Your model number will tell you which type you have. Find it on a sticker inside the fridge, usually on the side wall or back. Write it down and search "[your model number] water filter location" on Whirlpool's website or your refrigerator's manual if you still have it. The manual also shows the exact release mechanism for your specific filter.

Key Takeaways

  • Whirlpool filters are located either inside the fridge compartment or behind the bottom kickplate, depending on your model.
  • Turn off the water supply to the refrigerator before removing the old filter to prevent leaks and water damage.
  • Replacement filters are model-specific; confirm your model number before ordering to avoid buying the wrong cartridge.
  • After installing the new filter, run water through the dispenser for 3 to 5 minutes to flush air and set up the filter.
  • Most Whirlpool filters need replacement every 6 months, though this depends on your water quality and usage.

Turning off the water supply

Before you touch the filter, shut off the water valve that feeds your refrigerator. This valve is usually located behind the fridge, where the water line enters. It looks like a small knob or lever on the copper or plastic tubing. Turn it clockwise (or flip the lever perpendicular to the line) until it stops. You should feel resistance, but do not force it—a gentle, firm turn is enough.

If you cannot find the valve behind the fridge, it may be under your kitchen sink in the cabinet, or it may be part of your home's main water shutoff. If you are unsure, ask a plumber to show you where it is the next time they visit, or call a local plumber for a quick consultation. Turning off the water prevents water from spraying out when you remove the old filter.

Removing the old filter

For filters inside the fridge compartment, locate the release button or collar. Most Whirlpool models use a button you press inward, which ejects the cartridge. Some use a twist collar—turn it counterclockwise until the filter loosens and slides out. Have a towel or shallow dish ready; a small amount of water may drip from the connection.

For filters behind the kickplate, the process is similar. Unscrew or unclip the kickplate, then locate the filter housing. Press the release button or turn the collar counterclockwise. The filter will either slide straight out or twist free, depending on your model. Again, have a towel handy for drips.

Installing the new filter

Before you open the new filter, check the model number on the box against your refrigerator's model number. Whirlpool filters are not interchangeable between models. Remove the new filter from its packaging and inspect the rubber seals on both ends—they should be intact and not cracked or dried out.

Slide or twist the new filter into the housing until you hear or feel a click. The filter should sit flush and not wobble. For push-in filters, you may need to press firmly until the release button clicks into place. For twist-in filters, turn clockwise until snug—do not over-tighten. If the filter does not seat properly, remove it, check the seals, and try again.

Flushing the new filter and turning water back on

Once the filter is installed, turn the water valve back on by turning the knob counterclockwise or flipping the lever parallel to the water line. You may hear air hissing through the line—this is normal. Go to your refrigerator's water or ice dispenser and run water for 3 to 5 minutes without stopping. This flushes air out of the system and activates the filter's carbon media.

The water may look cloudy or taste slightly off for the first few minutes; this is also normal and will clear as you continue running water. After 5 minutes, the water should run clear and taste normal. If water does not flow at all, check that the water valve is fully open and that the filter is seated correctly. If water still will not flow, turn the valve off and reseat the filter.

Finding the right replacement filter

Whirlpool makes several filter models, and they are not compatible across different refrigerator lines. The most common are the 4396508, 4396510, and 4396547, but your model may use a different cartridge. Search your refrigerator's model number plus "water filter" on Whirlpool's official website, or check the old filter itself—the part number is usually printed on the side.

You can order filters directly from Whirlpool, from major appliance retailers like Best Buy or Lowe's, or from online marketplaces. Genuine Whirlpool filters cost between $40 and $80 depending on the model. Third-party filters that fit Whirlpool refrigerators are also available and often cost less, though performance and longevity may vary. If you choose a third-party filter, read reviews from other Whirlpool owners first.

When to replace your filter

Whirlpool recommends replacing the water filter every 6 months under normal household use. If you have hard water, high sediment, or a large household, you may need to replace it more often—every 3 to 4 months. If you use very little water from the dispenser, you may stretch it to 9 months, but do not go longer than a year.

Signs that your filter needs replacement include slower water flow from the dispenser, ice that tastes or smells off, or visible discoloration in the water. Some Whirlpool refrigerators have a filter status light on the control panel that turns red when replacement is due. Check your manual to see if yours has this feature. Mark your calendar when you install a new filter so you remember when 6 months have passed.

Frequently Asked Questions

What happens if I don't turn off the water before removing the filter?

Water will spray out of the connection when you remove the old filter, potentially damaging your kitchen floor or cabinets. The spray may also be forceful enough to splash your face or clothes. Always shut off the water valve first—it takes 10 seconds and prevents a mess.

Can I use a third-party filter instead of a genuine Whirlpool filter?

Yes, many third-party filters fit Whirlpool refrigerators and work adequately. However, genuine Whirlpool filters are tested to Whirlpool's standards and may filter more effectively. If you choose a third-party filter, buy from a reputable brand with good reviews from other Whirlpool owners, and check that the part number matches your model before ordering.

My water is not flowing after I installed the new filter. What should I do?

First, check that the water valve behind the fridge is fully open—turn the knob all the way counterclockwise. If water still will not flow, turn the valve off, remove the filter, and reseat it firmly. Make sure the rubber seals are not cracked or misaligned. If the filter is seated correctly and water still will not flow, the filter cartridge itself may be defective. Replace it with a new one.

Do I need to flush the new filter before using it?

Yes. Run water from the dispenser for 3 to 5 minutes after installing a new filter. This removes air from the line and activates the filter's carbon media. The water may look cloudy at first—this is normal and will clear as you continue running water.

How do I know which filter model my refrigerator uses?

Check your refrigerator's model number on the sticker inside the fridge, then search that number plus "water filter" on Whirlpool's website. You can also look at the old filter itself—the part number is printed on the side. If you are unsure, take a photo of the old filter and bring it to an appliance parts store; staff can match it to the correct replacement.