HEPA and ULPA filters
According to the filtration grade, filter material, structure, sealing method and equipment interface, select the appropriate
High-efficiency and ultra-high-efficiency air filtration products for clean rooms and air handling systems.
Provided by Aili IndustrialH13, H14 level HEPA filters andU15, U16, and U17 grade ULPA filters are available with fiberglass or PTFE filter materials, and can be matched to specifications according to the installation size, rated air volume, resistance requirements, frame material, and sealing method of the project. Products can be used in clean rooms, FFU, EFU, HEPA BOX, AHU and other air treatment equipment. The specific grade and performance are subject to the corresponding product specifications and testing data.
| name | content | name | content |
| HEPA rating | H13, H14 | ULPA rating | U15, U16, U17 |
| filter material | Glass fiber, PTFE | seal | Gasket, liquid tank, knife edge, PU |
| structure | Without partitions, with partitions, V-shaped | size | Standard and non-standard specifications |
| Supporting | FFU, EFU, BFU | system | HEPA BOX, AHU, clean air supply |
product catalog
Products in this category
This category covers HEPA, ULPA and filtration products with different filter materials, structures, sealing methods and air handling capacity directions. You can first determine the product range according to the filtration level, and then select the specific configuration based on the system air volume, resistance, installation size and use environment; the model and parameters are subject to the corresponding product page and technical information.
HEPA high efficiency filter
Covering H13 and H14 levels, it can be used in clean rooms, AHU, FFU and other clean air treatment equipment. Glass fiber or PTFE filter material can be selected according to the project.
Grade: H13/H14
ULPA ultra high efficiency filter
Covering U15, U16, and U17 grades, it is designed for clean environments with high particle control requirements. The size and sealing form can be configured according to the equipment interface.
Grade: U15/U16/U17
High efficiency filter without partition
Adopting a dense pleated filter material and glue line separation structure, the filter area can be arranged within the corresponding thickness and used for FFU, EFU, clean equipment and terminal air supply.
Structure: Mini-pleat
PTFE HEPA/ULPA filter
Using PTFE membrane filter material, it can be configured with HEPA or ULPA grade according to cleanliness requirements. Material suitability needs to be confirmed in conjunction with humidity, chemical media and complete filter components.
Filter material: PTFE
V type high air volume high efficiency filter
Multiple filter elements are combined in a V-shape to arrange a larger filter area in the box space, and are used in systems that require larger air treatment capacity.
Structure: V-Bank
Large air volume box type high efficiency filter
Using box-type or V-shaped filter element combination, the specifications can be confirmed according to the design air volume, installation space and allowable resistance of the air handling equipment.
Direction: Larger air handling capacity
Liquid tank seal high efficiency filter
The liquid tank and the knife edge cooperate to form an installation seal, which is used in clean systems where it is important to confirm the sealing connection between the filter and the installation frame.
Seal: liquid tank/knife edge
Non-standard HEPA/ULPA filter
Non-standard product configurations can be communicated based on equipment space, size, air volume, resistance, frame, filter material and sealing interface.
Scope: Dimensions match structure
| Comparative item | HEPA | Comparative item | ULPA |
| Common grades | H13, H14 | Common grades | U15, U16, U17 |
| position | High-efficiency air particulate filtration | position | Higher level air particle filtration |
| Common systems | Clean room, AHU, FFU, clean equipment | Common systems | High clean room, FFU, HEPA BOX, equipment end |
| filter material | fiberglass or PTFE | filter material | fiberglass or PTFE |
| Key parameters | Level, air volume, resistance, size, sealing | Key parameters | Level, air volume, resistance, size, sealing |
| Confirmation method | Subject to specifications and testing data | Confirmation method | Subject to specifications and testing data |
| name | content | name | content |
| Filter level → | H13, H14 | Filter level → | U15, U16, U17 |
| Filter media → | fiberglass | Filter media → | PTFE membrane filter material |
| frame → | Aluminum profiles and project required materials | Protection → | Double-sided protective net, etc. |
| Structure → | Without partitions or with partitions | Structure → | V-shaped combination |
| Seal → | EPDM gasket, liquid tank | Seal → | Knife edge, integrated PU |
| Size → | Standard size | Size → | Non-standard size |
| Install → | FFU, EFU, BFU | Install → | HEPA BOX, AHU |
| Information → | Specifications, drawings | Confirm → | Test data by project |
Semiconductor and equipment side
Used for clean air supply inside clean rooms, equipment and local areas.
Key points: grade, space, air volume, sealing
Panel display and precision electronics
Used in production areas and equipment that require particle control.
Focus: cleanliness, equipment interface, operating conditions
Photovoltaic and lithium battery manufacturing
Can be used in related production environments, equipment and air handling systems.
Focus: air volume, dust control, size
biomedicine
Used in clean production areas, air treatment equipment and related supporting systems.
Focus: Regional requirements, sealing, acceptance
Medical and Laboratory
For use in spaces with clean air and particle control requirements.
Focus: filter level, system matching, maintenance
precision optics
Used in optical components, precision manufacturing and particle sensitive areas.
Focus: particle control, airflow, interface
Food and Cosmetics
For use in related clean production, processing and packaging areas.
Focus: hygiene requirements, filtration, maintenance
Industrial and Commercial Air Treatment
Used in the filtration section of AHU, HVAC and other air handling equipment.
Focus: Dealing with air volume, resistance, and installation space
Fan and motor matching
For FFU, EFU, BFU and other equipment, check the filter resistance, design air volume and fan static pressure conditions together.
Related: air volume, static pressure, filter resistance
Control system collaboration
Equipment projects can simultaneously confirm speed regulation, operation control and communication requirements, so that filters and air supply equipment can communicate according to the same working conditions.
Related: Equipment operation and control requirements
Sheet metal and structural processing
The box, frame and related structural parts can be confirmed according to the installation space and equipment interface, and manufacturing support is provided for standard and non-standard sizes.
Related: Dimensions, interfaces, installation structures
Filter independent production system
Covering HEPA, ULPA and other air filtration products, the grade, filter material, size, frame and sealing method can be confirmed by project.
Related: Filter production and project selection
Assembly and process inspection
Quality inspection covers core components, production processes and complete machine assembly, and corresponding inspections are carried out according to product type.
Associations: parts, processes, assemblies
Product testing and delivery
Conduct corresponding performance and operational tests based on product type, and confirm specifications, materials, packaging and delivery arrangements based on project requirements.
Related: testing, information, packaging, delivery
Project support advantages for large factories
Aili Industry has a 30,000-square-meter production base. The production area covers motors, fans, filters, control systems, sheet metal processing, complete machine assembly, product testing, and finished product management. For HEPA and ULPA filter projects, complete site and manufacturing zoning provide the organizational basis for raw material entry, filter production, structural component processing, process inspection, finished product storage and packaging delivery.
The project value of large-scale production bases is mainly reflected in multi-category collaboration, parallelization of standard and non-standard products, batch project organization, and supporting communication of filters and clean equipment.
Sheet metal processing
Whole machine assembly
Product testing
Finished product area
Centralized coordination of multiple production links
Links such as filters, sheet metal, complete machine assembly and testing can be communicated around the same project conditions.
Project focus: specifications, interfaces, working conditions
Multi-product supporting communication
When the project requires filters, FFU, EFU, BFU or other clean equipment at the same time, the relevant parameters can be checked simultaneously.
Project focus: air volume, static pressure, installation
Standard and non-standard manufacturing support
Confirmation of standard specifications or non-standard dimensions, frames and sealing structures can be arranged according to product series and project conditions.
Project concerns: drawings, materials, quantities
Batch project organization
For different quantities, batch requirements and delivery nodes, production and delivery arrangements can be communicated during the order confirmation stage.
Project focus: quantity, batch, time
Process inspection and finished product management
Arrange corresponding process inspection, finished product storage and pre-shipment confirmation according to product type.
Project focus: check items, labels, information
Packaging and delivery coordination
Packaging and receipt requirements can be confirmed based on product structure, quantity and transportation method.
Project focus: packaging, transportation, receiving
From parts to finished products, how is each step inspected?
Through whole-process quality control, we reduce overall machine performance fluctuations caused by differences in component performance and ensure that EFU and other purification equipment have stable operating performance and good batch consistency.
When motors, fans, control systems, filters and complete machines are all controlled by their own manufacturing system, when product performance deviations occur, the problem can be quickly located and optimized, rather than relying on repeated coordination with multiple external suppliers.
Regarding HEPA and ULPA filters, you may also want to know
From product selection, performance configuration to customized development, the following are the most common issues that customers are concerned about when choosing HEPA and ULPA filters.
Q1: What are the main differences between HEPA and ULPA?
A: The main difference is the filter level range. The common ones for HEPA are H13 and H14, and the common ones for ULPA are U15, U16 and U17. The specific classification and efficiency should be confirmed in conjunction with the adopted test standards, test conditions and test results.
Q2: Is ULPA definitely more suitable for clean rooms than HEPA?
A: Not necessarily. Higher ratings usually mean the system requires more stringent checks on air volume, resistance, and fan capacity. It should be selected according to cleanliness requirements, process standards and system conditions, rather than just pursuing higher grades.
Q3: How should I choose H13, H14, U15, U16 and U17?
A: First confirm the cleanliness level, process requirements and acceptance standards, and then check the design air volume, allowable resistance, installation dimensions and sealing structure. The final grade is based on the technical requirements of the project.
Q4: How to choose between glass fiber filter material and PTFE filter material?
A: Both can be used for corresponding grades of high-efficiency or ultra-high-efficiency filtration products. When selecting, the filtration level, resistance, humidity, chemical environment, cost and suitability of the entire filter material should be compared.
Q5: What is the difference between liquid tank seal and gasket seal?
A: The gasket seal is pressed against the installation surface through the gasket; the liquid tank seal usually enters the liquid tank through the knife edge to form an installation seal. The selection should be based on the interface structure of the device or installation frame.
Q6: Can HEPA and ULPA filters be customized in size?
A: Specifications can be confirmed based on the project’s installation space, width, height and thickness dimensions, air volume, resistance, frame and sealing requirements. Non-standard products are subject to confirmed drawings and technical conditions.
Q7: Can the filter be matched with FFU or EFU?
A: Yes. When matching, the size, grade, resistance of the filter and the air volume, static pressure, installation structure and control requirements of the FFU or EFU should be checked at the same time.
Q8: What parameters need to be provided when inquiring about HEPA/ULPA air filters?
A: It is recommended to provide the use industry, use location, filtration level, size, design air volume, allowable resistance, filter material, frame, sealing method, working environment, quantity and delivery document requirements.
Q9: How to confirm product performance?
A: The technical specifications of the specific model, the technical conditions confirmed by both parties and the corresponding test data shall prevail. Category page information is used to understand the product range and make preliminary selections.
Q10: What is the relationship between Aili Industrial’s full industry chain manufacturing and filter projects?
A: Aili Industrial's manufacturing system covers motors, fans, filters, control systems, sheet metal, assembly and testing, etc., making it easy to simultaneously check relevant parameters in projects including FFU, EFU, BFU or air treatment equipment.
Customized air filter solutions for your special needs
Provide your installation dimensions, air volume/wind speed requirements and usage environment, and the Aili industrial engineering team can assist you in matching the solution.
What are the symptoms of HEPA filter air leakage?
HEPA air leakage may manifest as local abnormalities in on-site leak detection, traces of dust around the filter, or unstable particle control in local areas. The above phenomenon may also be caused by other system problems and needs to be checked one by one according to the location of the leakage point.
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How to do on-site leak detection of high-efficiency filter?
The purpose of on-site leak detection is to check whether there is any local leakage in the filter material, edge sealing and installation interface under specified operating conditions. Specific aerosols, testing equipment, scanning methods and qualification criteria should be implemented in accordance with the standards and verification plans adopted by the project.
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What should I do if the air volume is insufficient after using the H14 filter in the EFU?
After the EFU is installed in H14, the air volume is insufficient. The resistance of the filter element under the design air volume, the available static pressure of the fan, the equipment air inlet space and the air outlet shielding should also be checked. Simply increasing the motor speed may not solve structural limitations.
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How thick of HEPA can be installed on ultra-thin EFU?
The thickness of HEPA that can be installed with ultra-thin EFU is determined by the overall machine height, fan and air duct layout, target air volume, and disassembly and assembly methods. There is no fixed thickness that applies to all equipment.
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Will the increased resistance of the FFU high-efficiency filter reduce the wind speed?
After the FFU was replaced with HEPA, the wind speed dropped. First, compare the resistance of the new and old filter elements at the same air volume, and then check the installation direction of the filter element, the air inlet space of the unit, and the fan speed. Do not directly adjust the controller to the highest setting to cover up the selection problem.
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Does FFU use H13 or H14 high efficiency filter?
When choosing H13 or H14 for FFU, the starting point should be the cleanliness target and process requirements, and at the same time check whether the unit can maintain the target air volume and speed under the corresponding filter resistance. Installation of seals and on-site leak detection should also be included in the package.
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Do ISO 5 clean rooms have to use H14?
ISO 5 is a particle concentration level for clean environments and does not specify that a certain HEPA level must be used. Filter selection should also incorporate process particle requirements, air supply volume, airflow organization, sealing and field verification options.
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Can the cleanliness level and HEPA level correspond one to one?
The room cleanliness level cannot be directly converted into the only HEPA level. The particle level in a clean area is also determined by the source of pollution, air supply volume, air flow organization, sealing conditions and operation management.
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Can HEPA filters be transported flat?
Whether HEPA can be transported flat should comply with the product's packaging label and supplier requirements. Different sizes, filter materials and outer frame structures have different support methods, and the transportation method of a certain product cannot be extended to all filter elements.
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Will high humidity in the warehouse affect high-efficiency filters?
Long-term high humidity or condensation in the warehouse may affect the HEPA filter material, edge sealing, outer frame and packaging status. The size of the risk depends on the product structure and actual storage conditions, and should be managed according to the environmental requirements given by the supplier.
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How to install HEPA high efficiency filter?
HEPA installation should be carried out according to the airflow direction and installation drawing confirmed on site: first check the filter and frame, then clean the installation surface, press the seal evenly, and finally verify the air volume and seal under specified operating conditions.
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What should I do if the high-efficiency filter is installed backwards?
When it is found that the HEPA installation direction is inconsistent with the product or box identification, the acceptance of this position should be suspended, the supplier's drawings and airflow arrows should be checked, and then adjusted according to the allowed installation method. Just because the filter fits into the frame doesn't mean the orientation is correct.
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How to choose HEPA liquid tank seal?
The liquid tank seal HEPA needs to match the blade edge of the installation frame, tank size and sealing material. In addition to the filtration level and air volume when selecting, you must also confirm the assembly depth, transportation protection, installation direction and replacement method.
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How compressed does a HEPA gasket need to be?
HEPA gaskets should achieve the compression state specified by the supplier based on the selected material, thickness and installation structure. It is not appropriate to apply a fixed compression ratio to all products. Pressing too loosely or too tightly may affect long-term sealing.
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How to choose between HEPA and ULPA filters?
HEPA and ULPA should be selected based on the process particle control requirements and the test standards adopted by the project. At the same time, the resistance, fan margin, sealing structure and leak detection method of the two solutions under the target air volume should be checked.
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How does low-resistance HEPA compare with ordinary HEPA in long-term energy consumption?
To compare the energy consumption of two HEPAs, the resistance data at the same design air volume should be used, and the fan efficiency, control method, operating time and resistance changes after the filter accumulates dust should be considered. Energy savings cannot be calculated by looking at the 'low resistance' name alone.
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