Comparing G4 and F5 Air Filters in Industrial Applications

Filtration Classification

G4 Filters
- Classified as coarse efficiency filters (ISO coarse, EN779:2012 G4).
- Designed to capture larger particles ≥10 microns such as dust, fibers, and debris.
- Efficiency: typically 60–90% of coarse dust.
- Best used as a prefilter in multi-stage systems.
F5 Filters
- Classified as the entry point of the medium efficiency range (EN779 F5 or ISO ePM10 under ISO 16890).
- Capture particles in the 1–10 micron range.
- Efficiency: typically 40–60% for fine dust, higher retention of suspended particles compared to G4.
- Protects HEPA filters more effectively and extends their service life.

Construction & Media

HICLOVER G4 Filters
- Often constructed with synthetic nonwoven fabric, nylon mesh, or stainless-steel wire mesh for durability.
- Available in panel or roll form, suitable for integration with Automatic Roll Air Filter systems.
- Low resistance, high airflow, cost-effective.
HICLOVER F5 Filters
- Made from synthetic fiber or fine glass fiber media.
- Typically found in bag filters, pleated panels, or compact cartridges.
- Higher dust-holding capacity and more precise particle capture.

Applications

G4 Filters
- Primary stage for HVAC systems in commercial buildings, airports, and shopping centers.
- Prefiltration in mining workshops, cement plants, and steel mills, where heavy dust load requires frequent replacement.
- Widely applied in automatic roll air filter systems from HICLOVER, where coarse dust must be managed before fine filters.
F5 Filters
- Secondary filtration in pharmaceutical cleanrooms, electronics factories, and laboratories.
- Used in food processing plants where air cleanliness directly affects product safety.
- Applied in data centers and hospitals to reduce fine dust before air reaches sensitive equipment or patients.

Key Difference in Value

G4 filters are economical, high-airflow units that protect downstream filters from large dust particles.
F5 filters step up filtration, targeting smaller particulates and ensuring better compliance with ISO and GMP standards in controlled industries.

When integrated into HICLOVER Automatic Roll Air Filter systems, G4 filters serve as the rolling prefilter, while F5 filters act as the protective second stage before HEPA, creating a complete layered filtration solution for global markets such as Europe, North America, and Southeast Asia.