Air Filter Selection Guide
2026-04-24 10:19
How to Choose the Right Air Filter for Your Application
Choosing the right air filter is important for air quality, system stability, and operating cost. This guide helps you select the suitable filter type according to application, filtration stage, efficiency level, airflow, and working conditions.
Step 1: Identify Your Application
| Application | Recommended Filter Solution |
|---|---|
| General HVAC System | Bag Filters |
| Laboratory Ventilation | Medium-Efficiency Bag Filter + HEPA Filter |
| Hospital / Pharmaceutical Area | Medium-Efficiency Filter + HEPA Filter |
| Cleanroom Terminal Filtration | HEPA / ULPA Filters |
| Odor or Gas Removal | Activated Carbon Filters |
| High Airflow System | V-Bank and Compact Filters |
| High-Temperature Environment | High Temperature Resistant HEPA Filters |
Step 2: Choose the Filtration Stage
| Filtration Stage | Typical Filter Class | Recommended Product |
|---|---|---|
| Primary Filtration | G3 / G4 | Primary Bag Filter |
| Medium Filtration | F5 / F6 / F7 / F8 | Medium-Efficiency Bag Filter |
| High-Efficiency Filtration | H13 / H14 | HEPA Filter |
| Ultra-Clean Filtration | ULPA | ULPA Filter |
| Gas-Phase Filtration | Activated Carbon | Activated Carbon Filter |
| Special Working Condition | High Temperature | High Temperature Resistant HEPA Filter |
Recommended Filter Combinations
General HVAC System
Primary Bag Filter + Medium-Efficiency Bag Filter
Primary Bag Filter + Medium-Efficiency Bag Filter
Laboratory / Hospital
Medium-Efficiency Bag Filter + HEPA Filter
Medium-Efficiency Bag Filter + HEPA Filter
Cleanroom System
Primary + Medium + HEPA / ULPA Filter
Primary + Medium + HEPA / ULPA Filter
Odor or Gas Control
Primary Filter + Activated Carbon Filter
Primary Filter + Activated Carbon Filter
High Airflow System
V-Bank and Compact Filter
V-Bank and Compact Filter
High-Temperature Process
High Temperature Resistant HEPA Filter
High Temperature Resistant HEPA Filter
Key Parameters to Consider
- Airflow: The rated airflow should match the ventilation system design.
- Initial Resistance: Lower resistance helps reduce energy consumption.
- Final Resistance: Indicates the recommended replacement point.
- Filter Efficiency: Higher efficiency provides cleaner air, but usually increases resistance and cost.
- Installation Space: Filter size, depth, frame type, and sealing method should match the system structure.
- Working Environment: Special environments may require carbon, high-temperature resistance, gel seal, or corrosion-resistant materials.
Common Selection Mistakes
- Using HEPA filters without proper pre-filtration
- Selecting unnecessarily high efficiency and increasing system resistance
- Ignoring airflow and pressure drop requirements
- Choosing filter size without checking the installation frame
- Using standard filters in high-temperature or gas-phase applications
- Not setting a regular filter replacement schedule
Need Help Choosing the Right Filter?
Our team can help you select the suitable air filtration solution based on your application, airflow, efficiency requirement, installation size, and working conditions.
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