
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.




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

- Pre-Filtration: Captures larger particles, dust, hair, and other coarse contaminants.
- Particle Charging: Particles pass through an ionization field and receive an electrical charge.
- Electrostatic Collection: Charged particles are attracted to collecting plates and firmly captured, including particles down to 14.6nm.
- 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

Designed for Real-World HVAC Applications
Optimized airflow design. The wind encounters less resistance and thus moves through the space more quickly.
Collection components can be removed and cleaned rather than relying solely on disposable filter media.
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.
Modular design, easy to replace. The components can be washed and reused; they are durable and cost-effective.
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



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.

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.
