Every 6 months
About every six months, which is what Whirlpool, GE, Frigidaire, and other makers all recommend. Replace sooner if the water flow drops, the water or ice tastes or smells off, or the filter indicator light turns red. Heavy water use can exhaust a filter before six months.
The refrigerator water filter is one of those things with a clear, manufacturer-stated interval that almost nobody actually tracks, partly because the fridge keeps dispensing water long after the filter has stopped doing much. Six months is the number every major maker lands on.
The step people skip is the flush. A new carbon filter sheds fine black particles and holds trapped air, so run a few gallons through before you trust the first glass. It is harmless, but it looks alarming if you are not expecting it.
How to do it
- Find your refrigerator's model number on the door jamb label and buy the exact filter it takes. Use an NSF-certified filter.
- Note the indicator light color if your fridge has one, so you can confirm the reset later.
- Locate the filter, usually inside the compartment in an upper corner or in the grille at the bottom front.
- Remove the old filter with a twist-and-pull or push-and-release, depending on the model. Keep a towel handy for a little drip.
- Insert the new filter and lock it in, typically a quarter turn or a press until it clicks.
- Run two to three gallons through the dispenser to flush out carbon fines and trapped air, and discard the first batch or two of ice.
- Reset the filter indicator per your model, often a press-and-hold on a filter button.
Common mistakes
- Resetting the indicator without actually replacing the filter. That just hides an exhausted filter.
- Using an uncertified off-brand filter that fits but may not meet NSF contaminant-reduction standards.
- Skipping the post-install flush. New carbon filters shed harmless black fines and trap air, so the first water can look cloudy or sputter until you flush it.
This is exactly the kind of thing that is easy to know and easy to forget. Adulting can put it on a cadence so it surfaces when it is next due, instead of when something goes wrong. Free to start.
Sources
Questions people ask
- Is six months a hard rule?
- It is the standard interval makers set, but capacity matters too. A big household can hit the filter's rated gallons sooner, so replace early if flow drops or the water tastes off.
- Does an old filter actually matter?
- Yes. Past its life a filter stops reducing contaminants and can harbor bacteria in the media, and a clogged one slows the dispenser and strains the ice maker.