Highly efficient: Humidifier filter eliminates odours and keeps the cooler clean. Large, efficient evaporation surface provides a soft, healthy mist. alternative cooler filter : Replacement cartridges saves money, no need to buy a new chiller, enjoy clean and fresh air, one pack of 20 cartridges can be used for a long time. air cooler filter Cooling: The filter is made of advanced technology that attracts liquids and contains no toxic chemicals. The air from the replacement cartridges carries away cooling negative ions, and when the skin touches it, you can feel the temperature drop by about 5 °C to 8 °C . humidifier filter set Easy to install: The air cooler filter is self-contained in just a few seconds. After 2 minutes, the evaporation column is fully hydrated and gradually cools the air around you. replacement filter kit Fast water and heat absorption: Replacement cartridges absorb water and heat quickly, mineral fibre prevents harmful substance from growing, recommended to replace once every 2-3 months. humidifier filter set