Air Filter Types Comparison
| Filter Type | Typical Use | Key Features | |
|---|---|---|---|
| Panel Air Filter | Pre-filtration / air supply systems | Basic particle capture, low resistance, suitable for primary filtration | |
| Bag Filter | Medium-efficiency filtration | Large dust-holding capacity helps protect downstream high-efficiency filters | |
| V-Bank Filter | High airflow applications | Large filter area, suitable for large air volume, available in multiple efficiency grades | |
| Compact HEPA Filter For Laminar Flow | Laminar airflow systems/cleanroom aiovens/tunnelr supply | Compact structure, high-efficiency filtration, suitable for clean airflow applications | |
| Gel Sealed Mini-Pleat HEPA Filter | Critical cleanroom final filtration | Gel sealing design, mini-pleat structure, supports better airtightness | |
| Compact ULPA Filter | Ultra-clean environments | Higher filtration efficiency for strict contamination control applications | |
| Separator HEPA Filter | Cleanroom and industrial air filtration | Strong structure, stable filtration performance, suitable for demanding conditions | |
| High Temperature 350°C/450°C HEPA Filter | Sterilization tunnels / drying ovens / hot air environments | SUS304 stainless steel frame, H14/EN1822 filter class, high-temperature resistance | |
| High Temperature Separator HEPA Filter | Ultra-clean ovens/tunnel sterilization equipment | Stainless steel frame, aluminum foil spacers, high-temp resistant silica seal strip, H14/EN1822 filter class |
Applications of Cleanroom Air Filters
Used to help control airborne particles in sterile production areas, filling rooms, preparation areas, and other controlled environments.
Helps reduce airborne contamination risks in controlled production and packaging areas.
Helps reduce airborne particles that may affect chips, precision components, and electronic assembly processes.
Supports clean air conditions for testing, sample preparation, research, and sensitive laboratory processes.
Supports air cleanliness control in operating rooms, isolation areas, and medical clean environments.
How to Choose the Right Air Filter
| Selection Factors | Description |
|---|---|
| Filtration Efficiency | Choose the filter efficiency according to the required cleanroom level and contamination control target. |
| Airflow Volume | Make sure the filter supports the required airflow without creating excessive resistance. |
| Pressure Drop | Lower resistance can help maintain stable airflow and reduce energy consumption. |
| Installation Location | Different filters may be used in HVAC systems, cleanroom ceilings, FFUs, HEPA boxes, or equipment air supply systems. |
| Operating Temperature | Use high-temperature HEPA filters for hot air environments. |
| Seal Type | Gel seal or gasket seal can be selected based on airtightness and installation requirements. |
| Frame Material | Aluminum, galvanized steel, stainless steel, or other frame materials can be selected based on the application environment. |
Unmatched Benefits for Pharmaceutical Manufacturers
FAQs for Better Results
What type of air filter is suitable for cleanroom applications?
For cleanroom facilities, an air filter should be selected based on airflow, pressure drop, filtration efficiency, dimensions, installation form, and specific needs. Unlike a furnace filter used in a house or a standard HVAC filter, cleanroom filters are designed to protect critical equipment, manufacturing areas, and controlled environments from dust, debris, bacteria, and airborne particles.
Is LENGE an air filter manufacturer for industrial facilities?
Yes. LENGE is an air filter manufacturer and supplier focused on cleanroom, pharmaceutical, industrial, and commercial air filtration solutions. The company provides HEPA, ULPA, panel, bag, V-bank, compact, separator, gel seal, and high-temperature filters to support different facility, ventilation, exhaust, and HVAC system needs.
How do HEPA filters help improve air quality in cleanrooms?
HEPA filters remove at least 99.97% of 0.3-micron particles and are effective against dust, pollen, mold, particulate matter, and many airborne contaminants. In a cleanroom, better air quality means cleaner air, more stable production conditions, and stronger protection for products, operators, and equipment.
Are cleanroom air filters the same as home air purifiers or furnace filters?
No. Air purifiers, furnace filters, and fiberglass filters are usually designed for indoor air quality improvement or to protect heating and HVAC systems. Cleanroom air filters focus on stricter particle control, airflow stability, filter testing, safety, and filtration performance in controlled manufacturing environments.
Filter Type
Common Use
Furnace filter
Home HVAC protection
Air purifier filter
Indoor air cleaning
Cleanroom HEPA filter
Controlled facility filtration
When should I choose HEPA filters or ULPA filters?
Choose HEPA filters when your cleanroom needs high-efficiency air filtration for dust, particles, bacteria, and contaminants. For stricter environments with higher cleanliness requirements, ULPA filters can provide higher filtration efficiency and help create cleaner air for sensitive industrial or pharmaceutical processes.
Do MERV rating, pressure drop, and airflow matter?
Yes. Higher MERV ratings indicate better filtration performance, and MERV ratings range from 1 to 20 for air filters. However, for cleanroom projects, buyers should also focus on HEPA class, pressure drop, airflow, dimensions, durability, testing, and installation match, because altering filter types can impact system efficiency, energy use, and equipment lifespan.
How do air filters protect critical equipment and manufacturing processes?
Air filters help protect critical equipment by removing dust, debris, particulate matter, and contaminants from the air before they enter cleanroom systems or production areas. Proper filtration can reduce cleaning burden, support product safety, and help manufacturing equipment operate with stable airflow and optimal performance.
Which related cleanroom equipment may need air filters?
Air filters are commonly used with cleanroom equipment that requires cleaner air, controlled airflow, or a purified air supply. Related products include Fan Filter Units, HEPA Box, laminar airflow units, pass boxes, air showers, and other air cleaning systems used in cleanroom facilities.
How often should replacement filters be changed?
Replacement filters should be checked regularly and replaced based on filter type, pressure drop, airflow performance, contaminant load, and facility operating conditions. Most home air filters need replacement every 1–3 months, but cleanroom filters should follow testing data, system ratings, and actual operating conditions rather than a fixed household schedule.
Can LENGE provide filters for specific needs and installation requirements?
Yes. LENGE can support air filter selection based on efficiency, airflow, pressure drop, frame material, seal type, dimensions, installation method, and operating environment. For projects involving hazardous contaminants or safer filter access, the Bag In / Bag Out System can help protect operators during filter replacement and maintenance.
