The set includes:

1. Primary filter

Can filter out hair and larger dust particles.

It is recommended to clean it every 1-3 months.

2. Electrostatic filter

Filters out particles larger than 10 microns and cigarette tar.

It is recommended to replace it every 2-4 months.

3. High-efficiency filter

Filters out tiny suspended particles, allergens, pollen, bacteria, viruses, and mold.

It is recommended to replace it once every 6-12 months.

4. Oxygen-degrading reaction layer

Removes odors, decomposes, and eliminates harmful substances (such as formaldehyde and volatile organic compounds).

It can be used for a long time under normal maintenance .