How is the HEPA H13 filter lifespan calculated?Updated an hour ago

The lifespan of the HEPA H13 filter begins automatically as soon as it is first exposed to air. This is a natural characteristic of HEPA filters and applies regardless of whether the air purifier is actively being used.

Why does the HEPA H13 filter age even when it's not in use?

The lifespan of a HEPA filter starts to decrease once it is exposed to air because it continuously interacts with its environment.

In particular, HEPA filters with an activated carbon layer passively absorb:

• Moisture
• Airborne pollutants
• Odors and other contaminants

Over time, this gradual absorption reduces the filter's effectiveness, even if the device is switched off.

For this reason, we recommend keeping replacement filters sealed in their airtight packaging until they are needed. Once the packaging is opened, the filter begins to age due to oxidation, moisture absorption, and passive exposure to airborne contaminants.