How should I store my ZeroWater replacement filters?Updated 3 months ago

Storing unused filters

Unused ZeroWater filters in their original sealed packaging can be stored safely for an extended period — up to 2 years if kept in the right conditions.

Storage conditions

• Cool and dry: Store at room temperature, away from heat sources and moisture.
• Out of direct sunlight: UV light can degrade the packaging and potentially the filter media over time.
• In original packaging: Keep the filter in its sealed bag until you're ready to install it. The bag protects the filter media from drying out and from contamination.

Can I store a filter that's already been used?

Once a filter has been installed and used, it should not be stored dry for long periods — the ion exchange resin needs to stay moist to function correctly. If you remove an in-use filter (for example, when travelling), keep it in a clean sealed bag in the fridge and reinstall it within a few days.

Do not freeze a used filter — this can damage the resin.

Expired or old filters

If you're unsure whether an old filter is still good, install it and test your filtered water with the TDS meter. If it reads 000–005, it's working fine. If it reads 006 or higher from the first use, the filter may have degraded.