The normal service life of each filter (in a regular environment)
1. Primary filter (coarse filter)
Purpose: To intercept hair, large dust, and clumps
Can be washed and reused
Normal lifespan: 3 to 6 months
Severe clogging, deformation after cleaning, air leakage → Replace earlier
2. HEPA high-efficiency filter (core filter)
Purpose: PM2.5, dust, aerosols, bacterial carriers
Not washable, must be replaced when expired
For home / office: 6 to 12 months
For hospitals / clean rooms / crowded places: 3 to 6 months
In heavy smog and with large dust levels: 1 to 3 months
3. Activated carbon filter (odor removal / formaldehyde removal)
Purpose: Formaldehyde, odor, VOC, cooking fumes
Adsorption saturation leads to failure, not renewable
In regular environment: 3 to 6 months
In newly renovated areas, with strong odor, in smoking environments: 1 to 2 months
4. Composite filter (HEPA + activated carbon integrated)
Commonly used in home all-in-one machines
Lifespan: 6 to 12 months
In heavily polluted environments: 3 to 6 months
The key factors affecting lifespan (very important)
Usage duration: 8 hours per day vs 24-hour operation, lifespan differs by 2 to 3 times
Environmental cleanliness: Clean workshops, hospitals, renovated rooms → Lifespan significantly shortened
Fan speed setting: High-speed airflow will accelerate filter clogging
Humidity: In humid environments, mold is prone to occur, filter will be prematurely scrapped
Brief summary (for easy memorization)
Primary filter: 3 to 6 months (washable)
HEPA: 3 to 12 months (depending on the environment)
Activated carbon: 1 to 6 months
Composite filter: 6 to 12 months