Air Filters for Cleanrooms | HEPA, ULPA & Pre-Filtration Solutions | VIETPHAT

Thứ Ba, 08/09/2026

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Air Filters for Cleanrooms – HEPA, ULPA and Multi-Stage Filtration Solutions

Air Filters for Cleanrooms are specialized filtration products designed to reduce airborne particle concentrations in controlled environments where cleanliness is critical to product quality, process stability or contamination control.

Cleanroom filtration systems typically use several filtration stages, including Pre Air Filters, Medium Efficiency Filters, Fine Air Filters, Compact Filters, HEPA Filters and ULPA Filters.

VIETPHAT supplies Cleanroom Air Filters for applications in pharmaceutical manufacturing, electronics, semiconductor production, medical device manufacturing, laboratories, food processing, precision manufacturing and other controlled environments.

What Are Air Filters for Cleanrooms?

Cleanroom Air Filters are filters installed in HVAC systems, Air Handling Units, terminal housings, Fan Filter Units and other clean-air systems to remove airborne particles before air enters the controlled space.

Depending on the filtration stage, they may help remove:

Coarse dust.
Fine dust.
PM10.
PM2.5.
PM1.
Submicron particles.
Process-generated particulate contamination.

The required filtration system depends on cleanroom classification, process sensitivity, airflow concept and contamination-control objectives.

Why Are Air Filters Important in Cleanrooms?

Cleanrooms are designed to maintain controlled concentrations of airborne particles. Air filtration is therefore a core component of the cleanroom HVAC system.

Cleanroom filters help:

Reduce airborne particle concentrations.
Protect sensitive products and processes.
Support cleanroom classification requirements.
Reduce loading on final HEPA or ULPA filters.
Support stable cleanroom operation.
Protect HVAC components from dust.
Reduce contamination entering through make-up air.

How Do Cleanroom Air Filters Work?

Cleanroom Air Filters use high-performance fibrous media to capture particles as air passes through the filter.

Filtration mechanisms include:

Inertial Impaction: Larger particles collide with filter fibers.
Interception: Particles following airflow paths contact fibers.
Diffusion: Very small particles move randomly and contact filter fibers.
Electrostatic Effects: Selected media may benefit from electrostatic attraction.

For HEPA and ULPA filtration, the filter is designed and tested to achieve a specified high level of particle removal.

Main Types of Air Filters for Cleanrooms

1. Cleanroom Pre Air Filters

Pre Air Filters are installed upstream to remove larger particles before they reach Fine, HEPA and ULPA filters.

Typical constructions include:

Panel Filters.
Pleated Filters.
Synthetic Media Filters.
Washable Filters where appropriate.

Effective pre-filtration is important because final cleanroom filters are more expensive and should be protected from unnecessary dust loading.

2. Cleanroom Medium Efficiency Filters

Medium Efficiency Filters can be used as an intermediate stage between coarse pre-filtration and fine or HEPA filtration.

They help reduce particle loading on downstream filters and can extend final-filter service life.

3. Cleanroom Fine Air Filters

Fine Air Filters are used to capture smaller airborne particles before the final cleanroom filtration stage.

They are commonly installed in AHUs serving:

Pharmaceutical cleanrooms.
Electronics cleanrooms.
Semiconductor facilities.
Medical manufacturing areas.
Laboratories.

4. Cleanroom Compact Air Filters

Compact Air Filters use large media areas within rigid housings and can be suitable for high-efficiency upstream filtration.

They are often selected when space is limited or stable construction is required.

5. Cleanroom V-Bank Filters

V-Bank Air Filters use multiple filter packs arranged in a V-shaped configuration.

They provide:

Large media area.
High airflow capability.
Compact installation.
Potentially lower operating resistance than smaller-area designs.

6. Cleanroom HEPA Filters

HEPA Filters are commonly used as final filtration in cleanrooms and controlled environments.

Typical applications include:

Pharmaceutical production.
Electronics manufacturing.
Semiconductor cleanrooms.
Hospitals.
Laboratories.
Medical device manufacturing.

7. Cleanroom ULPA Filters

ULPA Filters provide even higher particulate filtration performance than HEPA Filters and are used where extremely low particle concentrations are required.

They are commonly associated with advanced semiconductor and microelectronics cleanrooms.

Cleanroom Air Filter Types at a Glance

Filter Type	Main Function	Typical Position	Typical Application
Pre Filter	Coarse particle removal	First stage	AHU / Make-up air
Medium Filter	Intermediate particle removal	Intermediate stage	Cleanroom AHU
Fine Filter	Fine particulate filtration	Intermediate stage	Pre-HEPA filtration
Compact / V-Bank Filter	High-efficiency upstream filtration	Intermediate stage	Cleanroom AHU
HEPA Filter	High-efficiency final filtration	Final stage	Cleanrooms and critical areas
ULPA Filter	Ultra-high-efficiency filtration	Final stage	Advanced cleanrooms

Typical Cleanroom Multi-Stage Filtration System

Cleanroom HVAC systems normally use multiple filtration stages to progressively reduce particle concentrations.

Typical Three-Stage System

Stage 1: Pre Filter.
Stage 2: Fine Filter.
Stage 3: HEPA Filter.

Typical Four-Stage System

Stage 1: Pre Filter.
Stage 2: Medium Efficiency Filter.
Stage 3: Fine Filter.
Stage 4: HEPA or ULPA Filter.

The actual configuration depends on cleanroom classification, airflow design, external air quality and process requirements.

Air Filters for Cleanroom AHUs

Cleanroom Air Handling Units typically use several upstream filtration stages before air reaches final HEPA or ULPA filters.

Common AHU filters include:

Pre Filters.
Bag Filters.
Fine Filters.
Compact Filters.
V-Bank Filters.

These upstream filters help reduce loading on final cleanroom filters and protect internal HVAC components.

Air Filters for Fan Filter Units in Cleanrooms

Fan Filter Units (FFUs) combine a fan and high-efficiency filter in a compact ceiling-mounted unit.

They are widely used in:

Semiconductor cleanrooms.
Electronics cleanrooms.
Pharmaceutical cleanrooms.
Laboratories.
Precision manufacturing areas.

FFUs may use HEPA or ULPA filters depending on required cleanroom performance.

Terminal HEPA Filters for Cleanrooms

Terminal HEPA Filters are installed close to or directly at the cleanroom supply-air outlet.

This arrangement minimizes contamination between the final filter and the controlled space.

Terminal housings may be configured with:

Gasket seal.
Gel seal.
Knife-edge sealing systems.
Room-side replaceable designs.

Mini-Pleat HEPA Filters for Cleanrooms

Mini-Pleat HEPA Filters use closely spaced pleats to increase effective media area while maintaining compact depth.

Benefits may include:

High media area.
Compact construction.
Suitable airflow characteristics.
Reduced media velocity.

Deep-Pleat HEPA Filters for Cleanrooms

Deep-Pleat HEPA Filters use separator-supported pleats to create a deeper filter pack.

They are used in selected industrial and cleanroom applications where robust construction and high media area are required.

H13 HEPA Filters for Cleanrooms

H13 HEPA Filters are commonly used in many cleanroom and controlled-environment applications.

They should be selected according to the applicable test standard, airflow, pressure drop and system requirements.

H14 HEPA Filters for Cleanrooms

H14 HEPA Filters provide a higher filtration class than H13 and are used where stricter particulate control is required.

Selection should consider:

Required filter class.
Rated airflow.
Initial pressure drop.
Housing design.
Seal configuration.
Integrity testing requirements.

ULPA Filters for Cleanrooms

ULPA Filters are used in applications requiring ultra-high-efficiency particulate filtration.

Common applications include:

Semiconductor fabrication.
Microelectronics manufacturing.
Advanced electronics cleanrooms.
Selected ultra-clean production environments.

Cleanroom Air Filters and ISO 14644

ISO 14644 is widely used for classification and control of cleanrooms and associated controlled environments.

Cleanroom classification is based on airborne particle concentration limits, not simply on the filter type installed.

Therefore, installing an H13, H14 or ULPA filter does not by itself guarantee a specific cleanroom class.

Cleanroom performance also depends on:

Airflow rate.
Air changes.
Airflow pattern.
Room pressure.
Filter coverage.
Room leakage.
Personnel and process contamination.
Cleaning procedures.
HVAC balance.

ISO Cleanroom Classes and Air Filtration

ISO 14644-1 defines cleanroom classes according to airborne particle concentration.

Commonly referenced classes include:

ISO Class 5.
ISO Class 6.
ISO Class 7.
ISO Class 8.

The appropriate filtration system for each facility should be engineered according to the required classification and process conditions.

Air Filters for ISO Class 5 Cleanrooms

ISO Class 5 environments typically require high levels of particle control and commonly use substantial HEPA or ULPA filter coverage.

The required filter coverage and airflow design depend on the process and cleanroom configuration.

Air Filters for ISO Class 6 Cleanrooms

ISO Class 6 cleanrooms also require high-efficiency final filtration, generally together with suitable upstream AHU filtration.

Air Filters for ISO Class 7 Cleanrooms

ISO Class 7 cleanrooms commonly use HEPA final filtration with carefully designed air change rates, pressure relationships and upstream filtration.

Air Filters for ISO Class 8 Cleanrooms

ISO Class 8 cleanrooms may use HEPA filtration and suitable upstream filters depending on the application and room design.

HEPA and ULPA Filter Standards

High-efficiency cleanroom filters are commonly evaluated according to standards such as:

EN 1822.
ISO 29463.

These standards address high-efficiency filters and provide methods for classifying and testing EPA, HEPA and ULPA filtration products.

Cleanroom Air Filters and ISO 16890

ISO 16890 applies primarily to general ventilation filters used upstream of HEPA or ULPA final filtration.

Relevant classifications include:

ISO Coarse.
ePM10.
ePM2.5.
ePM1.

These filters can help protect final cleanroom filters and reduce overall particulate loading.

G4, M5, M6, F7, F8 and F9 Cleanroom Pre-Filters

Existing cleanroom AHU specifications may still refer to former EN 779 filter classes such as:

These terms remain common in replacement projects, but current general ventilation filter specifications should generally consider ISO 16890 performance data where available.

Air Filters for Pharmaceutical Cleanrooms

Pharmaceutical manufacturing requires controlled environments to reduce particulate contamination and support process requirements.

Cleanroom filters may be used in:

Production rooms.
Filling areas.
Packaging areas.
Preparation rooms.
Laboratories.
Controlled storage areas.

The required filtration system depends on process classification and applicable facility requirements.

Air Filters for Electronics Cleanrooms

Electronics manufacturing can be sensitive to airborne particles that may affect components, displays and precision assemblies.

Applications include:

PCB production.
Electronic component assembly.
Display manufacturing.
Battery manufacturing.
Precision electronics production.

Air Filters for Semiconductor Cleanrooms

Semiconductor manufacturing requires extremely strict airborne particle control.

HEPA and ULPA Filters are commonly used in:

Ceiling filter systems.
Fan Filter Units.
Mini-environments.
Process tool filtration.
Clean benches.

For semiconductor Airborne Molecular Contamination applications, standard particulate filtration may not be sufficient. Specialized molecular filtration may also be required.

Air Filters for Medical Device Cleanrooms

Medical device manufacturing may use cleanrooms to control airborne contamination during assembly, packaging and production.

Filtration requirements should be selected according to room classification, product requirements and process conditions.

Air Filters for Food Cleanrooms

Food and beverage production may use controlled environments in selected processing and packaging areas.

Cleanroom filtration can help reduce airborne particulate contamination, but it should be integrated with hygiene, sanitation and process-control measures.

Air Filters for Laboratory Cleanrooms

Laboratories may require HEPA-filtered supply air where controlled particulate conditions are necessary.

Filter selection depends on:

Laboratory function.
Room classification.
Containment requirements.
Airflow direction.
Pressure relationships.

Air Filters for Precision Manufacturing Cleanrooms

Precision industries may require cleanroom filtration to prevent airborne particles from affecting high-value components or assembly operations.

Applications include:

Optical manufacturing.
Precision mechanics.
Aerospace components.
Sensor manufacturing.
Micro-assembly.

Cleanroom Air Filters vs HVAC Air Filters

Criteria	General HVAC Air Filters	Cleanroom Air Filters
Main Objective	General indoor air filtration	Controlled airborne particle concentration
Typical Final Filter	Fine / high-efficiency general ventilation filter	HEPA or ULPA
Typical Standards	ISO 16890	EN 1822 / ISO 29463 / cleanroom requirements
Installation	AHU, FCU, ventilation system	AHU, terminal housing, FFU, ceiling grid

Cleanroom Air Filters vs HEPA Filters

Cleanroom Air Filter is a broad term covering all filtration stages used in a cleanroom system.

A HEPA Filter is a specific type of high-efficiency particulate filter typically used as the final filtration stage.

Therefore, not every Cleanroom Air Filter is a HEPA Filter.

HEPA Filters vs ULPA Filters for Cleanrooms

Criteria	HEPA Filter	ULPA Filter
Filtration Level	High efficiency	Ultra-high efficiency
Typical Application	Pharma, hospitals, electronics	Semiconductor, ultra-clean processes
Pressure Drop	Depends on media and construction	Often higher for comparable size and airflow
Cost	Generally lower	Generally higher

Cleanroom Air Filters vs Carbon Filters

Cleanroom particulate filters and carbon filters perform different functions.

Criteria	HEPA / ULPA Filter	Carbon / Molecular Filter
Main Target	Particles	Gases and molecular contaminants
Mechanism	Particle capture	Adsorption / chemisorption
Typical Application	Particle-controlled cleanroom	AMC, odor or gas control

Airborne Molecular Contamination in Cleanrooms

Some advanced cleanrooms, particularly semiconductor facilities, must control not only particles but also Airborne Molecular Contamination (AMC).

Potential AMC categories may include:

Acidic gases.
Basic gases.
Organic compounds.
Condensable contaminants.
Corrosive gases.

Standard HEPA and ULPA filters are designed primarily for particulate filtration and do not remove all gaseous contaminants.

Specialized molecular filtration media may be required.

Cleanroom Filter Pressure Drop

Pressure Drop is a critical design parameter because cleanroom HVAC systems often move large volumes of air continuously.

Filter resistance depends on:

Filter class.
Media type.
Media area.
Filter depth.
Airflow.
Face velocity.
Dust loading.

As the filter loads with dust, pressure drop generally increases.

Initial Pressure Drop of Cleanroom Filters

Initial Pressure Drop is measured when the filter is clean at a specified airflow.

Low initial resistance can help reduce energy demand, but filter class and tested performance must remain suitable for the cleanroom application.

Final Pressure Drop of Cleanroom Filters

The final replacement resistance depends on:

Filter manufacturer recommendations.
HVAC fan capacity.
Required room airflow.
Cleanroom pressure relationships.
Energy considerations.

Cleanroom Filters and Energy Consumption

Cleanrooms often operate continuously with high air-change rates, so filter resistance can significantly affect fan energy consumption.

Life-cycle evaluation should consider:

Initial pressure drop.
Average operating pressure drop.
Filter efficiency.
Media area.
Service life.
Replacement frequency.
Fan energy use.

Dust-Holding Capacity of Cleanroom Pre-Filters

Dust-holding capacity is especially important for upstream filters because it affects how quickly final HEPA and ULPA filters become loaded.

Suitable upstream filtration can help:

Extend HEPA service life.
Reduce maintenance frequency.
Maintain airflow stability.
Lower life-cycle cost.

Common Cleanroom Filter Media

Depending on the filtration stage, media may include:

Synthetic fiber media.
Glass fiber media.
Fine-fiber media.
Mini-pleat high-efficiency media.
Specialized HEPA media.
Specialized ULPA media.

Common Cleanroom Filter Frame Materials

Frame materials may include:

Aluminum.
Galvanized steel.
Plastic.
Other cleanroom-compatible materials.

Cleanroom HEPA Filter Seal Types

Correct sealing is essential because bypass around the filter can reduce overall filtration performance.

Common sealing systems include:

Gasket seal.
Gel seal.
Knife-edge gel seal.
Application-specific sealing systems.

Why Air Bypass Is Critical in Cleanrooms

A highly efficient filter cannot provide effective system-level performance if contaminated air bypasses the filtration media.

Potential bypass points include:

Damaged gaskets.
Incorrect filter size.
Improper clamping.
Damaged housing.
Incorrect installation.

HEPA Filter Integrity Testing

Cleanroom HEPA filtration systems may require integrity testing after installation and during periodic qualification according to facility requirements.

The purpose is to detect:

Media leaks.
Seal leaks.
Frame leaks.
Installation defects.

Testing procedures should follow the applicable project, validation and regulatory requirements.

Airflow in Cleanrooms

Cleanroom filtration performance is closely connected to airflow design.

Two commonly used concepts are:

Unidirectional airflow.
Non-unidirectional or mixed airflow.

The appropriate approach depends on cleanroom classification and process requirements.

Cleanroom Air Changes per Hour

Air Changes per Hour can be an important cleanroom design parameter, but there is no single universal air-change value for every cleanroom class.

The correct value depends on:

Room class.
Process contamination load.
Occupancy.
Room geometry.
Airflow pattern.
Recovery requirements.

Cleanroom Positive and Negative Pressure

Cleanroom HVAC systems may use room pressure differentials to influence airflow between adjacent areas.

Positive pressure is commonly used to help reduce contamination entering a cleaner space.

Negative pressure may be used where containment is required.

Pressure strategy should be designed according to process and facility requirements.

How to Select Air Filters for Cleanrooms

1. Define the Cleanroom Classification

Identify the required ISO cleanroom class or other applicable facility classification.

2. Identify the Process

Determine whether the cleanroom is used for pharmaceutical, electronics, semiconductor, medical, food or another application.

3. Determine the Final Filter Requirement

Select HEPA or ULPA filtration according to the required particle-control level.

4. Select Upstream Filtration

Use suitable Pre, Medium and Fine Filters to protect final filters.

5. Confirm Airflow

Filter airflow should match the cleanroom HVAC design.

6. Check Pressure Drop

The system fan must provide sufficient static pressure while maintaining required room airflow.

7. Confirm Filter Dimensions

Verify Width × Height × Depth and housing configuration.

8. Select the Correct Seal

Choose gasket, gel or other sealing systems appropriate to the terminal or housing design.

9. Review Integrity Testing Requirements

Determine whether individual filter testing or installed system leak testing is required.

10. Consider Life-Cycle Cost

Evaluate pressure drop, energy use, service life, replacement cost and validation requirements.

Important Cleanroom Air Filter Specifications

Parameter	Description
Dimensions	Width × Height × Depth
Filter Type	Pre, Fine, HEPA, ULPA
Filter Class	ISO 16890 / H13 / H14 / ULPA as required
Rated Airflow	Design airflow through the filter
Initial Pressure Drop	Resistance when clean
Final Pressure Drop	Recommended service limit
Media	Synthetic, glass fiber or high-efficiency media
Frame	Aluminum, GI, plastic or specified material
Seal	Gasket / gel / knife-edge
Testing	Factory or installed integrity requirements

Custom Size Cleanroom Air Filters

Cleanroom filtration systems may use non-standard housings and ceiling grids.

Depending on construction, VIETPHAT can support custom requirements including:

Width.
Height.
Depth.
Filter class.
Rated airflow.
Frame material.
Gasket configuration.
Gel seal configuration.
Filter pack depth.

Replacement Air Filters for Existing Cleanrooms

Replacement filters should match both physical dimensions and technical performance requirements.

Useful information includes:

Existing filter dimensions.
Filter class.
Existing filter label.
Rated airflow.
Pressure drop.
Frame material.
Seal type.
Filter housing photos.

When Should Cleanroom Pre-Filters Be Replaced?

Pre and Fine Filters should be replaced according to actual loading and system performance.

Common indicators include:

High differential pressure.
Reduced airflow.
Heavy dust loading.
Damaged media.
Damaged frame.
Bypass around the filter.

When Should HEPA Filters Be Replaced?

HEPA replacement should not be based on calendar time alone.

Replacement may be required when:

Pressure drop reaches the approved limit.
The filter fails integrity testing.
Media is damaged.
Seals are damaged.
Airflow cannot be maintained.
The cleanroom no longer meets required performance.
Facility procedures require replacement.

Can Cleanroom HEPA Filters Be Washed?

Standard HEPA and ULPA Filters are generally not washable.

Washing can damage:

Fine filter media.
Pleat geometry.
Sealants.
Frame integrity.
Filtration performance.

HEPA and ULPA filters should normally be replaced when they reach their service limit.

How to Extend HEPA Filter Service Life

Use effective upstream Pre Filters.
Use suitable Fine Filters.
Maintain AHU cleanliness.
Monitor differential pressure.
Prevent bypass around upstream filters.
Maintain outdoor-air intake areas.
Operate filters within rated airflow.

Cleanroom Air Filter Maintenance

A cleanroom filter maintenance program may include:

Differential pressure monitoring.
Visual inspection.
Seal inspection.
Filter housing inspection.
Airflow measurement.
HEPA integrity testing where required.
Cleanroom particle-count testing.
Scheduled replacement of upstream filters.

Common Cleanroom Air Filter Problems

Incorrect Filter Class

A filter with insufficient performance may prevent the cleanroom from achieving the required airborne particle control.

Excessive Pressure Drop

High resistance can reduce cleanroom airflow and disrupt pressure relationships.

Air Bypass

Leaks around the filter frame can significantly reduce system performance.

Insufficient Pre-Filtration

HEPA filters can load prematurely when upstream filtration is inadequate.

Damaged HEPA Media

Damage to high-efficiency media can compromise filter integrity.

Incorrect Installation

Improper filter installation can cause leaks, seal failure or mechanical damage.

Life-Cycle Cost of Cleanroom Air Filters

Cleanroom filtration cost should be evaluated over the complete operating life of the system.

Factors include:

Filter purchase price.
Pressure drop.
Fan energy consumption.
Pre-filter replacement frequency.
HEPA or ULPA service life.
Integrity testing.
Maintenance labor.
Disposal cost.
Cleanroom downtime.

Cleanroom Air Filter Supplier in Vietnam – VIETPHAT

VIETPHAT supplies Air Filters for Cleanrooms and controlled environments across industrial and high-technology applications.

We support filter selection according to:

Cleanroom classification.
Application.
Filter class.
Filter dimensions.
Airflow.
Pressure drop.
Frame construction.
Seal type.
Installation housing.
Testing requirements.

VIETPHAT Cleanroom Air Filter Product Range

Cleanroom Pre Filters.
Cleanroom Medium Efficiency Filters.
Cleanroom Fine Filters.
Cleanroom Compact Filters.
Cleanroom V-Bank Filters.
Cleanroom HEPA Filters.
H13 HEPA Filters.
H14 HEPA Filters.
Mini-Pleat HEPA Filters.
Deep-Pleat HEPA Filters.
Terminal HEPA Filters.
FFU HEPA Filters.
ULPA Filters.
Custom Cleanroom Air Filters.
Replacement Cleanroom Filters.

Applications of VIETPHAT Cleanroom Air Filters

Pharmaceutical cleanrooms.
Electronics cleanrooms.
Semiconductor cleanrooms.
Medical device manufacturing.
Laboratories.
Food processing cleanrooms.
Precision manufacturing.
Battery manufacturing.
Optical manufacturing.
Clean benches.
Fan Filter Units.
Cleanroom AHUs.

Information Required for a Cleanroom Air Filter Quotation

Required Information	Example
Filter Dimensions	W × H × D in mm
Filter Type	Pre / Fine / HEPA / ULPA
Filter Class	ePM1 / H13 / H14 / ULPA
Rated Airflow	m³/h
Initial Pressure Drop	Pa
Frame Material	Aluminum / GI / Plastic
Seal	Gasket / Gel Seal
Application	Pharma / Electronics / Semiconductor
Quantity	Number of filters

Frequently Asked Questions About Air Filters for Cleanrooms

What Air Filters Are Used in Cleanrooms?

Cleanrooms commonly use Pre Filters, Medium Filters, Fine Filters, HEPA Filters and, in selected applications, ULPA Filters.

Which Filter Is Most Important in a Cleanroom?

The final HEPA or ULPA Filter is critical for high-efficiency particle control, but upstream filtration is also important for protecting the final filter and maintaining stable system performance.

Do All Cleanrooms Use HEPA Filters?

Many controlled cleanrooms use HEPA filtration, but the exact filtration requirement depends on room classification, application and design requirements.

When Are ULPA Filters Used?

ULPA Filters are typically used in extremely clean environments such as selected semiconductor and microelectronics facilities.

What Is the Difference Between H13 and H14 HEPA Filters?

H14 represents a higher filtration class than H13 under applicable high-efficiency filter classification systems. Selection should be based on project requirements and tested filter performance.

Does an H14 Filter Automatically Make a Room ISO Class 5?

No. Cleanroom classification depends on the complete room system, including airflow, filter coverage, room leakage, pressure relationships, contamination load and operating conditions.

Can Cleanroom HEPA Filters Be Washed?

No. Standard HEPA and ULPA Filters are generally disposable and should not be washed.

How Often Should Cleanroom HEPA Filters Be Changed?

Replacement depends on pressure drop, integrity testing, airflow, filter condition and facility maintenance procedures rather than a fixed time interval alone.

Why Are Pre-Filters Needed Before HEPA Filters?

Pre and Fine Filters remove larger particles before they reach the HEPA Filter, helping reduce loading and extend final-filter service life.

Can HEPA Filters Remove Gases and Odors?

HEPA Filters are designed primarily for particles. Gas and odor control generally requires activated carbon or specialized molecular filtration media.

What Is a Terminal HEPA Filter?

A Terminal HEPA Filter is installed near or directly at the final supply-air outlet to minimize contamination between the final filter and the cleanroom.

What Is an FFU Filter?

An FFU Filter is the HEPA or ULPA filtration element installed in a Fan Filter Unit used in cleanroom ceiling systems.

Can VIETPHAT Supply H13 and H14 HEPA Filters?

Yes. VIETPHAT supplies high-efficiency cleanroom filtration solutions including H13, H14, mini-pleat, deep-pleat and terminal HEPA configurations according to project requirements.

Can VIETPHAT Supply Custom Cleanroom Filters?

Yes. Depending on filter construction, custom dimensions, frame materials, seal configurations and performance requirements can be supported.

What Information Is Required for a Quotation?

Please provide Width × Height × Depth, filter type, filter class, airflow, initial pressure drop if available, frame material, seal type, quantity and cleanroom application.

Contact VIETPHAT for Air Filters for Cleanrooms

For technical consultation, replacement selection or quotation for Air Filters for Cleanrooms, HEPA Filters and ULPA Filters, please contact VIETPHAT: