If your refrigerator has a water filter indicator light, it will turn red when the filter needs to be replaced. Depending on your model, you may also see a blinking light or hear a beeping sound. To reset the indicator light or silence the beep, install a new filter and press and hold the reset button for three seconds.
If your fridge does not have an indicator light, it's still important to replace your water filter every six months. Not only will this help ensure that your water tastes great, but it will also keep your ice cubes clear and prevent sediment from building up in your fridge's water dispenser.