Most refrigerator water filters take less than five minutes to swap out, and you do not need tools or a plumber

Your refrigerator water filter sits in one of three places: inside the fridge (usually in the upper corner or back wall), under the sink, or in a housing unit mounted to the wall or cabinet. The replacement process is the same regardless: turn off the water supply, remove the old filter by twisting or unclipping it, and slide in the new one until it clicks or seats fully. You will know it is working when water flows normally from the dispenser again.

The hardest part is usually finding the filter in the first place. If you cannot locate it, check your refrigerator's manual — most manufacturers post them free online if you search the model number. Once you know where it is, the actual swap takes about as long as making coffee.

Key Takeaways

  • Refrigerator water filters are located either inside the fridge, under the sink, or in a wall-mounted housing unit, depending on your model.
  • Most filters twist counterclockwise to remove and push straight in or twist clockwise to install, though some clip in and out instead.
  • You should turn off the water supply before removing the old filter to prevent water from spraying into the cabinet or fridge.
  • After installing a new filter, run water through the dispenser for 30 seconds to flush out carbon dust and air from the cartridge.
  • Replacement filters cost between $30 and $80 depending on the brand and model, and most last between 6 and 12 months.

Locate your filter before you start

Open your refrigerator and look in the upper corners, the back wall, or inside the crisper drawers. Many filters sit in a cylindrical housing with a button or lever on the front. If you do not see one inside the fridge, check under the sink — some models have a separate filter canister mounted to the wall or tucked inside the cabinet. A third option is a whole-house filter system, which sits in a housing unit near your water main, though those are less common on refrigerators.

Your refrigerator manual will tell you exactly where yours lives. Search "[your model number] water filter location" online and you will usually find a diagram within seconds. The model number is printed on a sticker inside the fridge, usually on the back wall or on the side wall near the top.

Turn off the water supply before you remove the old filter

Locate the water shut-off valve under your sink or behind the refrigerator. It looks like a small knob or lever on the water line. Turn it clockwise (or flip the lever to the off position) until it stops. This prevents water from spraying out when you remove the old filter.

If you cannot find the shut-off valve, you can still remove the filter — just be ready for water to drip into a bucket or towel. Some people skip this step and accept the mess, but shutting off the water takes 10 seconds and saves you from mopping.

Remove the old filter by twisting or unclipping

Most filters twist counterclockwise to come out. Grip the filter housing firmly with one hand and turn the filter body to the left with the other. It will loosen after a quarter turn and then slide out. Some filters have a release button on the side — press it and the filter pops out. A few models have a clip or latch you squeeze to release the cartridge.

Once the old filter is out, water may drip from the housing. Have a towel ready. Do not panic if a small amount of water spills — this is normal. If water gushes out continuously, you did not turn off the supply valve fully. Go back and turn it further.

Install the new filter and turn the water back on

Remove the new filter from its packaging and check that the rubber gasket (the ring at the end) is in place. Slide the filter into the housing and push it straight in until you feel resistance. Then twist it clockwise until it stops — usually a quarter to a half turn. You will hear or feel a click when it seats fully. Do not over-tighten; a firm hand-tight fit is all you need.

For clip-in filters, straightforward push the cartridge into the housing until the clip snaps into place. You should hear a distinct click. Turn the water supply valve back on by turning it counterclockwise (or flipping the lever to the on position). Water should flow normally from the dispenser within a few seconds.

Flush the new filter for 30 seconds before drinking

Run water through the dispenser or the faucet connected to the filter for about 30 seconds. This flushes out carbon dust and air that collected inside the new cartridge during storage. The water may look slightly cloudy or taste a bit off during this flush — that is normal and harmless. After 30 seconds, the water will clear and taste normal again.

Some refrigerators have a filter reset button on the control panel. Press it after installing the new filter so the fridge knows to start counting down the filter's lifespan. This button does not do anything to the water itself — it just resets the reminder light that tells you when to replace the filter next time.

Know when to replace your filter

Most refrigerator filters last between 6 and 12 months, depending on your water quality and how much water you use. Your fridge will display a reminder light or message on the control panel when the filter is due. Some models beep or show a percentage of filter life remaining on the display.

Do not wait until the light comes on if your water tastes off, looks cloudy, or the dispenser slows down. A clogged filter can reduce water pressure and may allow contaminants to pass through. Replacement filters cost between $30 and $80 depending on the brand and model. Buying them in bulk from warehouse stores or online is usually cheaper than buying them one at a time from appliance stores.

Frequently Asked Questions

What if water sprays out when I remove the old filter?

You did not turn off the water supply fully, or the valve is stuck. Turn the shut-off valve further clockwise and wait a few seconds for the pressure to drop. Have a bucket or towel under the filter housing. If the valve will not turn, it may be frozen from disuse — try turning it very slowly and gently, or call a plumber to replace the valve.

Can I use a generic filter instead of the brand-name one?

Yes. Generic filters work in most refrigerators and cost less than brand-name replacements. Check the part number on your old filter and search for compatible replacements online. Read reviews to make sure the generic filter fits your model and performs well. Some people notice a slight taste difference, but most find generic filters work just as well.

My filter is stuck and will not twist out. What do I do?

Turn off the water supply first. Wrap a towel around the filter for grip and try twisting again with steady, firm pressure — do not jerk it. If it still will not budge, let it sit for 10 minutes (sometimes mineral deposits loosen on their own), then try again. If it remains stuck after that, call a plumber rather than forcing it, as you could crack the housing.

How do I know which replacement filter to buy?

Write down your refrigerator's model number and search "[model number] water filter" online. You will see the exact part number and compatible filters. You can also call the refrigerator manufacturer's customer service line — they will tell you the correct filter in under a minute. Buying the wrong filter is frustrating but not expensive; most stores accept returns.

Do I need to turn off the water if I am just replacing the filter?

You do not have to, but it prevents water from dripping or spraying when you remove the old filter. If you skip this step, keep a towel handy and be ready to catch water. Turning off the valve takes 10 seconds and saves mess, so most people do it.