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Airdog IEF Technology

A TPA®-Based Active Air Filtration Technology for HVAC and Specialized Air Treatment

Active Particle Collection | Microbial Control |Washable and Low-resistance Design

What is IEF?

IEF is an industrial air filtration technology based on Airdog's TPA® technology. It uses particle charging and electrostatic collection to actively remove airborne particles, with additional treatment stages depending on the system configuration.

IEF can be configured as an air filtration module for HVAC and ventilation systems or integrated into customized air-treatment equipment.

Learn more about Airdog IEF

Airdog TPA
TPA® technology
IEF Module
IEF Module
HVAC-ventilation
HVAC System
FreshAir
Clean Air

How IEF Works?


At the core of the system is an active electrical filtration process: particles are first prepared and electrically charged, then collected by electrically charged collection surfaces. Additional filtration components can also help address odors and certain gaseous pollutants.


In simple terms, the IEF process can be understood as:

Pre-Filtration → Particle Charging → Electrostatic Collection → Catalytic Filtration

Learn more about how IEF Works

IEF Working Principle
  1. Pre-Filtration: Captures larger particles, dust, hair, and other coarse contaminants.
  2. Particle Charging: Particles pass through an ionization field and receive an electrical charge.
  3. Electrostatic Collection: Charged particles are attracted to collecting plates and firmly captured, including particles down to 14.6nm.
  4. Catalytic Treatment: Catalytic media help address odors and certain gaseous pollutants.

Verified by Independent Testing

Performance data is available for key parameters, including particle removal, microbial purification, virus inactivation, initial efficiency, pressure drop, and ozone concentration.

More Airdog IEF test reports

Virus Performance
Influenza A virus, H1N1. A 30m³ area. After a 1-hour test, the virus removal rate was 99.99%
Microbial Purification
air volume 2434 m³/h. Laboratory-tested microbial purification performance 99.36%
Initial filtering efficiency
Particle concentration ≥ 0.3um, air volume 2434 m³/h, wind speed 2.5 m/s, initial efficiency reaches 99.0%
Resistance test
When the air volume is 2434 m³/h and the wind speed is 2.5 m/s, the initial resistance is 41.
IEF-Test-Report
View More Certifications & Test Reports

Designed for Real-World HVAC Applications

Engineered for reliable operation, easy maintenance, and flexible integration.
Low Pressure Drop

Optimized airflow design. The wind encounters less resistance and thus moves through the space more quickly.

Washable Collectors

Collection components can be removed and cleaned rather than relying solely on disposable filter media.

Modular Design

IEF modules can be configured according to the required airflow and installation conditions. It can also be assembled into machines with different sizes and appearances.

Maintenance

Modular design, easy to replace. The components can be washed and reused; they are durable and cost-effective.

HVAC Integration

Designed to integrate with air-handling and ventilation systems.The module size can be adjusted according to the system, and it is easy to integrate and assemble.

Multiple Integration Options

IEF can be installed in different positions depending on your system design and project requirements.
HVAC-System
The IEF module, as an air filtration module, is applicable to HVAC systems, air handling units, and large air handling systems. Modular design, easy to install and clean. It can be washed and reused, saving costs.
Food-and-Fruit-Freshener-Machine
This IEF technical device is used in mushroom breeding houses and some fruit and vegetable sales areas. Reduces airborne microbes, improving food safety, improving product yield, preserving product quality, and extending the shelf life.
purification&dehumidifier

The IEF technology is integrated into the air-handling machine, combining the functions of purification, dehumidification, and humidification into one. Used in households and villas. This equipment has been installed and is operating in some villas and small office areas in Japan.

Airdog-Proclean

Built for professional environments.

Designed for high-critical environments. Constructed entirely in stainless steel and powered by TPA electrostatic filtration. ProClean is engineered for industries where air quality equals safety, productivity, and peace of mind.

IEF Technology Principle and Product Video