How often does the HumidX need to be replaced?

AirMini

The HUmidX needs to be replaced 30 days after its packaging is opened. If the HumidX was not used every day during the 30-day period, it must still be replaced. The HumidX design life bases on the date of opening the packaging not the number of days used during therapy, however it is important to inspect the HumidX regularly.