# Signs That It Is Time to Replace Your Filters

Filters used past their service life change how water tastes and how fast it flows. Watch for these signs.

- Page: https://demo.coway.one/en/articles/filter-replacement-signs
- 20 Oct 2026

Filters have a limited service life. Even when the water still looks clear, a worn filter may no longer work at full capacity, so replace it on the schedule the manufacturer sets.

## Water flows more slowly

As sediment builds up in a filter, water passes through it less easily. If the flow is clearly slower than before, check the filters first.

## The taste or smell changes

Carbon filters reduce odours and improve taste. Near the end of their life you may notice a chlorine smell or a taste that differs from before.

## The reminder light comes on

Many models remind you when a replacement is due. Do not reset the reminder without actually replacing the filter.

## The schedule in the manual is up

Note the date of the last replacement and replace the filter when the interval is up, even if nothing seems wrong.