Maintaining clean air is crucial in many environments, from residential air purifiers to industrial cleanrooms and medical facilities. Choosing the right HEPA filter can significantly impact air quality, energy efficiency, and overall system performance. With a wide range of HEPA grades, sizes, and materials available, making an informed decision may seem challenging. ~에 Airyfilter, we specialize in high-quality HEPA filters for diverse applications, ensuring you find the right solution for your project. 이 가이드에서는, we’ll walk you through everything you need to know to select the most suitable HEPA filter.
HEPA 필터는 무엇이며 어떻게 작동합니까??
A HEPA filter is a high‑efficiency particulate air filter that must remove at least 99.95% (H13) 또는 99.995% (H14) of particles at the most penetrating particle size (MPPS) according to EN 1822.
HEPA filters rely on three physical mechanisms:
- 차단 – particles follow airflow lines and stick to fibers
- 임팩트 – larger particles collide directly with fibers
- 확산 – ultra-fine particles move randomly (Brownian motion) and get captured
This multi-mechanism process allows HEPA filters to remove dust, 화분, 박테리아, 곰팡이 포자, aerosols, and fine particulate matter (PM2.5) with extremely high efficiency.
Key HEPA Filter Standards and Grades (H10~H14, U15+)
Not all HEPA filters are the same. Different regions follow different classification systems, but the most widely used is EN 1822 / ISO 29463, which categorizes filters based on efficiency at MPPS.
Common HEPA and ULPA Grades
| 등급 | Typical Efficiency | Application Level |
|---|---|---|
| H10 | ≥85% | Pre-HEPA / light filtration |
| H11 | ≥95% | Commercial HVAC |
| H12 | ≥99.5% | Medical support areas |
| H13 | ≥99.95% | 병원, 실험실 |
| H14 | ≥99.995% | 클리닝 룸, 제약 |
| U15+ | ≥99.9995% | 반도체, 마이크로 전자 공학 |
Different Types of HEPA Filters
HEPA 필터 come in several types, each designed for specific applications and efficiency requirements. Understanding the differences can help you choose the right filter for your project. For a detailed guide, you can also check our full Types of HEPA Filters Guide.
- HEPA형 필터 (E등급)
These are often marketed as “HEPA-like” or “HEPA-style” filters and are commonly used in consumer air purifiers or vacuum cleaners. They typically capture around 90–95% of particles, which is lower than true HEPA filters. While suitable for general air cleaning, they are not recommended for critical environments. - 진정한 HEPA 필터 (H등급)
True HEPA filters meet the standard requirement of ≥99.97% efficiency for 0.3-micron particles. Made from dense fiberglass media, they remove dust, 화분, 연기, and other airborne contaminants. These filters are widely used in residential, 광고, and industrial air purification systems, providing reliable and consistent air quality. - 의료용 HEPA 필터 (H13~H14)
Designed for healthcare and laboratory settings, these filters achieve 99.95% (H13) 에게 99.995% (H14) 능률. They are ideal for surgical rooms, 격리 병동, 및 클린룸, where maintaining ultra-clean air is critical. Medical-grade HEPA filters feature tighter fiber density and enhanced sealing to prevent any bypass leakage. - 순수한 & Ultra-HEPA Filters (등급 A/U)
These ultra-high-efficiency filters capture over 99.999% 입자의, making them suitable for pharmaceutical manufacturing, 반도체 생산, and high-level biosafety environments. Due to their dense media, they have a higher pressure drop and require powerful airflow systems.
Key Factors to Consider When Choosing a HEPA Filter
Selecting the right HEPA filter requires balancing efficiency, 기류, 내구성, and cost. At Airyfilter, we recommend evaluating the following key factors:
1. Required air quality and cleanroom class
Start with the target cleanliness level—ISO Class 5 filling zone, ISO 클래스 7 cleanroom, high‑risk isolation room, or a “near‑clean” industrial area—because this largely dictates whether you need H13, H14, or ULPA filtration. Many ISO 7–8 areas and general cleanrooms operate reliably with H13 filters, while ISO 5 zones, sterile filling lines, or highly sensitive electronics production may call for H14 or above.
2. Airflow rate and pressure drop
Every HEPA filter introduces resistance to airflow, and the higher the efficiency and the denser the media, the higher the pressure drop. Typical HEPA filters may have initial pressure drops in the range of 150–250 Pa, with final recommended resistance often reaching 400–600 Pa depending on the system design.
If you upgrade from a lower‑grade filter to an H14 or ULPA filter without checking the fan curve and available static pressure, you can lose air changes per hour (ACH) and compromise cleanroom performance. Airy engineers routinely help customers balance HEPA efficiency, face velocity, and pressure drop to keep systems within their design envelope.
3. Filter media and frame materials
HEPA filters can be built with glass fiber, synthetic media, or PTFE‑based membranes, each offering different trade‑offs in efficiency, dust‑holding capacity, and resistance to humidity or chemicals. Frame materials such as galvanized steel, 알류미늄, stainless steel, or MDF must match your temperature, corrosion, and fire‑safety requirements, especially in pharmaceutical and industrial environments.
At Airy Filter, we manufacture its own filter media and assembles HEPA filters in‑house, giving tight control over media selection, 주름 기하학, and frame design for OEM and project‑specific needs.
4. System compatibility and installation method
The physical size, 깊이, and sealing system of the HEPA filter must match your air handling unit, fan‑filter unit, or terminal housing. Options include headered or headerless construction, gasket‑seal or gel‑seal frames, and custom sizes to retrofit existing ceiling grids or AHU filter sections without structural changes.
We support custom HEPA sizes and multiple frame profiles, you can align filter dimensions with existing housings, minimizing installation time and retrofit cost.
5. Maintenance interval and lifecycle cost
Total cost of ownership (TCO) matters as much as initial filter price, especially in large cleanroom or industrial HVAC systems. A high‑efficiency HEPA filter with no proper pre‑filter can clog quickly, causing high pressure drop, elevated energy use, and frequent downtime for replacement.
We typically recommend multi‑stage filtration—coarse, fine, then HEPA—to extend service life, reduce energy consumption, and keep your overall filtration system cost‑effective over time.
Common Mistakes When Selecting a HEPA Filter
Many users make avoidable errors when choosing a HEPA filter:
- Selecting incorrect HEPA grade for the application.
- Ignoring 압력 강하, leading to underperforming fans.
- Focusing solely on price rather than long-term cost and energy efficiency.
- Overlooking installation compatibility, causing bypass leaks.
- Neglecting environmental factors, like humidity or chemical exposure.
By avoiding these mistakes, you ensure the filter performs effectively and lasts as expected.
How to Choose the Right HEPA Filter for Different Applications
주거용 공기 청정기: H13 panel filters are sufficient for capturing dust, 화분, 그리고 연기.
의료 & Laboratory Environments: H14 filters or ULPA are required for surgical rooms, 격리 병동, 및 클린룸.
Industrial Applications: Bag or cartridge HEPA filters handle high airflow and dust loads in factories, clean manufacturing, or semiconductor production.
HVAC 시스템: Mini-pleat HEPA filters optimize airflow while maintaining high efficiency in central air handling units.
Airyfilter offers a range of customized HEPA solutions tailored to these applications, helping clients achieve both compliance and optimal air quality.
How to Select a Reliable HEPA Filter Manufacturer or Supplier
Working with a professional manufacturer ensures:
- Consistent HEPA grade and performance
- Access to customized solutions for specific airflow and dimensions
- Compliance with international standards
- Reliable technical support for installation, 테스트, and maintenance
설립 2009, 통풍이 잘되는 필터 (https://airyfilter.com/) integrates air filter media production and finished filter manufacturing in a 10,000 m² facility, with a monthly capacity of around 200,000 단위. The company holds certifications such as ISO9001, ISO14001, CE, SGS, and EN‑compliant test reports, and exports HEPA filters and filtration solutions to spray booth, cleanroom, HVAC, and industrial customers worldwide.
Final Checklist Before Buying a HEPA Filter
Before purchasing, consider this quick checklist:
- Determine the required HEPA grade for your environment.
- Verify airflow and pressure drop compatibility with your system.
- Confirm 크기, frame, and installation type.
- Check material durability for your operational conditions.
- Ensure certifications and testing standards are met.
- Review maintenance requirements and energy consumption.
- Choose a reliable supplier with technical support and customization capabilities.
Following these steps ensures your HEPA filter performs efficiently, lasts longer, and provides the clean air quality your project requires.
~에 Airyfilter, we combine expertise, certified materials, and tailored solutions to help you select the perfect HEPA filter for any project.
