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

A refrigerator water filter sits inside your fridge or on the back exterior wall and catches sediment, chlorine, and other particles from your water line. When it gets clogged — usually every six to twelve months, depending on your water quality and how much ice and water you use — the flow slows down and the water tastes worse. Changing it is a straightforward job: locate the filter, turn or pull it out, slide in the new one, and run water through it for a minute to flush the system.

The exact steps depend on where your filter lives and how your model attaches it. Most filters either twist out like a light bulb or pull straight out. You will need to know your refrigerator's make and model number to order the correct replacement filter, and you should have the new filter on hand before you start.

Key Takeaways

  • Find your refrigerator's model number on the wall inside the fridge or on the back exterior, then order the matching replacement filter before you begin.
  • Locate your filter by checking inside the fridge (usually in the upper right corner or on the back wall) or on the exterior back wall, depending on your model.
  • Turn the filter counterclockwise to unscrew it, or pull it straight out — the method depends on your refrigerator's design.
  • After installing the new filter, run water through the dispenser for 30 seconds to flush air and loose carbon particles from the system.
  • Set a reminder to check or change your filter every six to twelve months, or sooner if water flow drops or taste changes.

Find your refrigerator model number and order the right filter

Your refrigerator's model number is printed on a label inside the fridge or on the back exterior. Open the fridge and look on the wall behind the crisper drawers, on the ceiling, or on the side walls — most manufacturers put it there. If you do not find it inside, check the back of the unit near the bottom or on the side. Write down the full model number (it usually starts with letters like "RF" or "WRF" for Samsung, "LRMVS" for LG, or similar).

Take that model number to the manufacturer's website, a big-box appliance retailer, or an online parts seller and search for "water filter" plus your model number. You will see the correct filter listed with a part number. Buy it before you start the swap — you do not want to drain your system and then wait for shipping. Most filters cost between $20 and $60.

Locate the filter inside or outside your refrigerator

Filters sit in one of two places: inside the fridge or on the back exterior wall. Open your refrigerator and look in the upper right corner first — many models have a cylindrical filter cartridge mounted there, either on the ceiling or on the wall. If you do not see it inside, walk around to the back of the fridge. Look for a plastic housing or a cylindrical cartridge mounted on the exterior wall, usually near the bottom or middle height.

Once you spot it, check whether the filter twists or pulls. If it is a cylindrical cartridge with a knurled (ridged) grip around the middle or bottom, it twists counterclockwise. If it is a flat rectangular cartridge or a push-in style, it pulls straight out. Your new filter's packaging will show you the correct motion, so check that too if you are unsure.

Turn or pull out the old filter

If your filter twists: grip the knurled section firmly and turn it counterclockwise — the same direction you unscrew a light bulb. It should come free after a quarter to half turn. Some filters are tight, so use a towel for grip if your hands are slippery. As you remove it, a small amount of water may drip, so have a towel ready underneath.

If your filter pulls straight out: grasp the cartridge and pull it toward you with steady pressure. It should slide out of its housing. Again, a small amount of water may spill, so place a towel on the floor or shelf below.

Once the old filter is out, look inside the housing. You may see a rubber gasket or O-ring — a small rubber seal. If it is stuck to the old filter, peel it off and set it aside. If it stayed in the housing, leave it there. Do not force anything or try to clean the housing with tools; just wipe away any loose debris with a damp cloth if you want to, but it is not necessary.

Install the new filter and flush the system

Remove the new filter from its packaging and check the rubber gasket or O-ring. If you removed one from the housing, make sure it is seated properly on the new filter — it should fit snugly in a groove. If the gasket stayed in the housing, the new filter will seat into it when you install it.

If your filter twists: align the cartridge with the housing and turn it clockwise until it is snug. Do not over-tighten — you want it firm enough that it will not leak, but not so tight that you will struggle to remove it next time. A quarter turn past hand-tight is usually right.

If your filter pulls in: slide the cartridge into the housing until you hear or feel a click, or until it is flush with the housing. Some models have a latch or button you need to press to lock it in place — check your filter's instructions if you are unsure.

After the new filter is installed, go to your water or ice dispenser and run water for 30 seconds. This flushes air out of the line and removes loose carbon particles from the new filter. The water may look slightly cloudy or gray during this time — that is normal and will clear up. If you have an ice maker, discard the first batch of ice cubes it makes after the filter change.

When to change your filter and what to watch for

Most manufacturers recommend changing your filter every six months, but the real timeline depends on your water quality and usage. If you make a lot of ice or use the water dispenser frequently, you may need to change it every four to six months. If you use it lightly, it might last nine to twelve months. The best signal is the water itself: if the flow slows down noticeably or the water starts to taste or smell off, change the filter even if it has not been six months.

Some refrigerators have a filter-change indicator light on the display panel. When it turns on or blinks, that is your cue to order a new filter and plan the swap. If your fridge does not have a light, set a phone reminder for six months after you install each new filter. Write the installation date on the filter cartridge itself with a permanent marker — it takes two seconds and makes it easy to remember when you last changed it.

Troubleshooting common filter problems

If water still flows slowly after you install a new filter, run the dispenser for another minute to make sure all the air is out of the line. If it is still slow, check that the filter is seated all the way in — a filter that is not fully inserted will restrict flow. Turn it another quarter turn (if it twists) or push it in harder (if it pulls), then try again.

If water leaks from the filter housing after installation, the gasket or O-ring may not be seated correctly. Turn off the water supply to the fridge (usually a valve under the sink or behind the fridge), remove the filter, check that the gasket is in the groove, and reinstall it. If it still leaks, the gasket may be damaged and need replacement — order a new gasket from the manufacturer using your model number.

If you cannot find your model number or the correct filter, call the refrigerator manufacturer's customer service line. They can walk you through locating the number and confirm the right filter for your unit. Most manufacturers also have online chat support or email support if you prefer not to call.

Frequently Asked Questions

Do I really need to use the manufacturer's filter, or can I buy a cheaper third-party one?

Third-party filters are cheaper and often work fine, but they may not filter as thoroughly or last as long as the original. If your water tastes fine with a third-party filter and the flow is good, you can use it. If you notice a taste difference or slower flow, switch back to the manufacturer's filter. Always check that a third-party filter is certified for your specific model before buying.

What if I cannot get the old filter out because it is stuck?

Grip the filter firmly with a towel for better traction and turn slowly — do not jerk it. If it still will not budge, try wrapping a rubber band around the knurled section for extra grip. If it is a pull-out style that is stuck, wiggle it gently side to side as you pull. If it remains stuck after a few minutes of gentle effort, stop and call the manufacturer — forcing it could damage the housing.

Can I use my refrigerator's water and ice while I am waiting for a new filter to arrive?

Yes. The old filter will continue to work until you replace it, even if it is past due for a change. Water quality may be lower and flow may be slower, but it is safe to use. Just change the filter as soon as the new one arrives.

How do I dispose of the old filter?

Most water filters can go in your regular trash. Some communities have special recycling programs for water filters — check your local waste management website to see if yours does. A few manufacturers offer mail-back programs where you send the old filter back for recycling, though these are less common for refrigerator filters.

Why does my water look cloudy right after I change the filter?

New filters are packed with activated carbon, and some loose particles come loose when water first flows through. This cloudiness is harmless and will clear up after you run water for 30 to 60 seconds. If the water stays cloudy after a few minutes of running, stop and check that the filter is installed correctly.