PM2.5 Cabin Filter

As urban air pollution and consumer awareness of cabin air quality continue to increase, PM2.5 filtration has become one of the most important performance indicators for modern automotive cabin air filters.

BiaoDian PM2.5 Cabin Filter is specially developed for automotive HVAC systems. The filter adopts an optimized multi-layer media structure consisting of Meltblown Media, Electret Cotton, and Electret Support Layer, achieving an excellent balance between filtration efficiency and airflow performance.

Unlike conventional cabin filters that rely solely on mechanical interception, this filter uses advanced Electret Technology, allowing the media fibers to maintain stable electrostatic charges for a long period. Through the dual filtration mechanism of mechanical filtration and electrostatic attraction, the filter actively captures ultrafine particles while keeping airflow resistance low.

What Is A PM2.5 High Efficiency Cabin Air Filter?

A PM2.5 Cabin Filter is a finished filtration product designed for automotive HVAC systems.

Installed inside the cabin air conditioning system, it removes ultrafine airborne particles before air enters the passenger compartment, helping improve cabin air cleanliness and passenger comfort.

Compared with conventional cabin air filters, this product offers:

* Higher PM2.5 filtration efficiency

* Lower pressure drop

* Better airflow performance

* Longer service life

* Stable filtration performance

* Electrostatic particle attraction

This optimized structure allows the filter to capture ultrafine particles while maintaining comfortable airflow inside the cabin.

Why Is PM2.5 Filtration Important?

PM2.5 refers to airborne particles with diameters of 2.5 microns or smaller.

These fine particles are commonly generated by:

* Vehicle exhaust emissions

* Industrial emissions

* Urban smog

* Road dust

* Construction activities

* Wildfire smoke

Due to their extremely small size, PM2.5 particles can easily enter vehicle cabins through HVAC systems.

Therefore, high-efficiency PM2.5 cabin air filters have become an essential component for improving cabin air quality, especially for urban driving conditions and heavily polluted environments.

Core Advantages

Electret Technology Improves PM2.5 Filtration Efficiency

The filter media adopts high-performance Meltblown Media combined with advanced Electret Technology.

After electrostatic treatment, the fibers retain stable electric charges and continuously attract ultrafine particles.

Compared with conventional mechanical filtration media, electret media can achieve significantly higher PM2.5 filtration efficiency under the same pressure drop conditions.

Meltblown + Electret Cotton Composite Structure

The filtration media consists of:

* Meltblown Media

* Electret Cotton

* Electret Support Layer

This multi-layer structure provides:

* High filtration efficiency

* Low pressure drop

* Excellent air permeability

* Long service life

* Stable structure

The filter maintains reliable performance throughout its service life.

High PM2.5 Filtration Efficiency

The filter is optimized to capture ultrafine particles efficiently.

PM2.5 filtration efficiency:

≥99%

Average value:

99.43%

Test standard:

ISO 11155-1

Test conditions:

* A2 Fine Dust

* Face Velocity: 0.2 m/s

The filter effectively removes:

* PM2.5 particles

* Pollen

* Dust

* Smoke particles

* Road dust

helping improve cabin air cleanliness.

Low Pressure Drop

Many high-efficiency cabin air filters sacrifice airflow performance.

BiaoDian optimizes:

* Meltblown fiber fineness

* Electret layer basis weight

* Support layer structure

* Pleat geometry

to maintain low airflow resistance while ensuring excellent filtration efficiency.

Pressure drop:

≤11 Pa

Average value:

10 Pa

This allows the HVAC system to maintain stable airflow and improves driving comfort.

Excellent Air Permeability

Air permeability:

≥800 L/m²·s

Average value:

979.7 L/m²·s

The optimized fiber structure ensures both filtration performance and airflow efficiency.

Drivers and passengers can enjoy cleaner air without sacrificing ventilation comfort.

Stable Filter Structure

The product offers:

* Excellent dimensional stability

* Good pleating strength

* Moisture resistance

* Temperature resistance

The filter structure remains stable during long-term use and fits mainstream cabin filter housings.

Long Service Life

With its optimized fiber structure and stable electrostatic filtration performance, the filter provides a long service life.

Recommended replacement interval:

10,000-15,000 km

depending on driving conditions and environmental factors.

Specifications

Technical Specifications

Why Are Electret Filter Media Becoming More Popular?

Traditional cabin air filters mainly rely on mechanical filtration.

To improve filtration efficiency, manufacturers often increase media density, which leads to higher pressure drop and reduced airflow.

With Electret Technology, however, the filter media not only blocks particles mechanically but also attracts ultrafine particles electrostatically.

As a result, electret cabin filters can simultaneously achieve:

✔ High PM2.5 filtration efficiency

✔ Low pressure drop

✔ Excellent airflow performance

✔ Longer service life

✔ Improved passenger comfort

This is why electret filtration technology is increasingly adopted in new energy vehicles and premium passenger vehicles.

OEM & Customization

BiaoDian provides flexible OEM and customization services.

Available options include:

* Customized dimensions

* OEM part numbers

* Private label packaging

* Logo printing

* Customized filtration performance

Our engineering team can assist customers from sample development to mass production.

Quality Assurance & Certifications

BiaoDian operates under internationally recognized quality systems, including:

* IATF 16949

* ISO 9001

* ISO 14001

Routine inspections include:

* PM2.5 filtration testing

* Air permeability testing

* Pressure drop testing

* Electrostatic performance testing

* Structural stability testing

* Product traceability

Packaging & Shipping

Available packaging options:

* Individual packaging

* Color box packaging

* Neutral packaging

* OEM packaging

* Export cartons

* Reinforced pallet packaging

Packaging can be customized according to customer requirements.

With stable production capacity and mature export experience, we support both small trial orders and large-volume shipments worldwide.

FAQ

Q: How effective is this cabin air filter at removing PM2.5?

A: The PM2.5 filtration efficiency reaches ≥99%, with an average tested value of 99.43% according to ISO 11155-1.

Q: Does electrostatic filtration lose efficiency over time?

A: The filter media adopts stable Electret Technology, which helps maintain electrostatic charges for a long service life under normal operating conditions.

Q: Does high filtration efficiency increase airflow resistance?

A: No.The filter is designed with a low pressure drop structure, and the average pressure drop is only 10 Pa, helping maintain stable HVAC airflow.

Q: Is this filter suitable for electric vehicles?

A: Yes.It is suitable for passenger vehicles, electric vehicles, and commercial vehicles.

Q: Can you provide OEM packaging?

A: Yes.Customized packaging, logo printing, and private label services are available.

Q: Can samples be provided before mass production?

A: Yes.Samples are available for testing and project evaluation before bulk purchasing.

Looking For A Reliable PM2.5 Cabin Air Filter Supplier?

Whether you are developing a new PM2.5 cabin air filter project, upgrading your current filtration products, or searching for a long-term manufacturing partner, BiaoDian can provide sample testing, OEM support, and stable supply services.

Contact us today to learn more about our PM2.5 cabin air filtration solutions and discuss your project requirements.