What Is Airdog IEF?

Airdog IEF is an industrial air filtration module based on Airdog's TPA® technology, designed to integrate with HVAC, air handling, and ventilation systems to provide efficient and washable air filtration for commercial, institutional, and industrial environments.

Unlike a conventional standalone air purifier, IEF is designed to become part of an existing air circulation or ventilation system. It can be installed within air handling equipment or ventilation pathways, allowing air purification to take place as air moves through the system.

What Does IEF Stand For?

IEF refers to Airdog's industrial electronic air filtration technology and product platform, developed for larger-scale air purification applications.

The technology is based on Airdog's TPA® (Two Pole Active) technology, which applies electrical fields to actively charge and collect airborne particles rather than relying solely on passive mechanical filtration.

The IEF concept extends Airdog's air purification technology from standalone air purifiers into HVAC and ventilation applications, where larger volumes of air need to be treated continuously.

How Does Airdog IEF Work?

Airdog IEF uses a multi-stage filtration structure based on the same core TPA® technology used in Airdog's air purification systems.

The basic process can be understood in four stages.

1. Pre-Filtration

The first stage intercepts larger airborne particles such as dust, hair and other coarse particles before the air enters the electronic collection section.

This helps protect the subsequent filtration components and prepares the airflow for the active purification stages.

2. Particle Charging

As air passes through the IEF ionization section, airborne particles are electrically charged within an electric field.

This changes the behavior of the particles and allows them to be attracted to the collection surfaces in the following stage.

3. Ionic Field Zone

In this zone, a high-voltage electric field of tens of thousands of volts will be formed. Bacteria, viruses and germs present in the air will be killed by the high voltage when passing through this electric field zone. In the test data from the laboratory, the virus removal rate for some samples reached as high as 99.99%.

4. Electrostatic Collection

The charged particles enter the collection section, where they are attracted to collector plates.

This active electrical collection mechanism is a fundamental difference between TPA-based filtration and conventional passive mechanical filtration.

The collection components can be removed and cleaned, allowing the system to be maintained without relying on routine replacement of disposable filter media.

5. Additional Filtration

Depending on the IEF configuration, additional filtration materials can be used to address odors and certain gaseous pollutants.

Depending on the local air environment and customer needs, sometimes additional air-filtering and odor-cleaning accessories are added, such as HEPA filters and highly efficient carbon filters.

IEF Is Designed for HVAC and Ventilation Systems

One of the most important characteristics of Airdog IEF is that it is not simply a larger portable air purifier.

It is designed as an air purification module that can be integrated into air ducts, air handling systems, fresh-air systems and other ventilation applications.

Air can pass through the IEF module as part of the building's existing ventilation process.

A simplified system can be represented as:

Outdoor Air → Air Intake → IEF Module → Air Handling System → Air Duct → Indoor Space

This approach allows air purification to become part of the building's existing air movement infrastructure.

Where Can Airdog IEF Be Used?

Because IEF is designed for integration with ventilation systems, its potential applications extend beyond individual rooms or residential spaces.

Current IEF product information identifies applications including homes and villas, hospitals, schools, shopping malls and underground parking areas, while the system can also be considered for other commercial and industrial ventilation environments depending on project requirements.

Commercial Buildings

IEF can be integrated into ventilation and air handling systems serving offices, commercial buildings, hotels and other occupied spaces.

Hospitals and Healthcare Facilities

Ventilation systems in healthcare environments require controlled air movement and filtration. IEF can be incorporated into suitable HVAC or ventilation configurations as part of an overall air filtration strategy.

Schools and Educational Buildings

Centralized or fresh-air ventilation systems can provide an opportunity to treat incoming or circulating air before it reaches occupied areas.

Shopping Malls and Large Public Spaces

Large buildings require continuous air movement and may process substantial volumes of air. Modular electronic air filtration can be integrated into suitable ventilation systems.

Industrial and Ventilation Applications

IEF can also be considered for industrial ventilation and other engineered air treatment applications where the airflow, installation space and environmental conditions are compatible with the product specifications.

What Makes IEF Different from Conventional Filter Systems?

Traditional air filtration systems commonly rely on mechanical filter media to physically intercept particles as air passes through the filter.

Airdog IEF uses an active electronic collection mechanism based on TPA technology.

This difference affects how the system is designed and maintained.

The purpose of this design is not simply to change the filtration mechanism, but to provide a different approach to long-term air filtration and maintenance.

Washable Filtration and Maintenance

A major characteristic of IEF is its washable collection system.

The Airdog engineer recommends cleaning the primary filter screen, generator and collector according to the air environment and installation conditions, with six months given as a suggested reference interval that may be shortened depending on the application environment.

This maintenance model is different from systems that depend primarily on replacing disposable filter media.

For commercial and industrial applications, the maintenance strategy should therefore be considered as part of the overall system design.

A Modular Approach to Industrial Air Filtration

Airdog IEF is designed as a modular air filtration platform.

Current product information includes models such as IEF1700 and IEF3400, with different physical dimensions and airflow/application configurations.

This modular concept allows IEF to be considered for different ventilation systems and installation environments rather than limiting the technology to a single type of air purifier.

IEF for Project-Based Air Filtration

Airdog IEF is particularly relevant to projects where air filtration needs to be considered together with the building's ventilation infrastructure.

Instead of selecting a standalone air purifier based only on room size, an engineering project can evaluate factors such as:

• Required airflow

• Installation space

• HVAC configuration

• Electrical requirements

• Environmental conditions

• Maintenance access

• Filtration requirements

• System operating conditions

The appropriate IEF configuration should therefore be selected according to the actual project and system requirements.

Airdog IEF vs. Standalone Air Purifiers

The simplest way to understand the difference is:

A standalone air purifier treats air within a specific space.

Airdog IEF is designed to treat air as part of a ventilation or air-handling system.

This makes IEF particularly relevant when the objective is to integrate air filtration into the building's existing air circulation infrastructure.

Rather than placing multiple portable units throughout a building, an engineered IEF solution can be evaluated as part of the HVAC or ventilation design.

The appropriate approach depends on the building, airflow requirements, system configuration and project objectives.

IEF Performance and Technical Evidence

Test Standard and methods: GB/T 34012-2017 《 Air purifier for ventilation system》, detecting air volume 2434m3/h, the test report: Microbial purification efficiency 99.36%.

Virus removal performance: removal of influenza A virus H1N1: A/PR/8/34 ATCC VR-1469, the rate 99.99%.

Who Is Airdog IEF Designed For?

Airdog IEF is primarily relevant to professional and project-based users, including:

• HVAC system integrators

• Mechanical contractors

• Engineering companies

• Facility managers

• Building operators

• Commercial property developers

• Industrial customers

• Air purification distributors

• HVAC and ventilation solution providers

For these users, the key question is not simply:

"Which air purifier should I buy?"

It is:

"How can air filtration be integrated into this ventilation system?"

That is the core application concept behind Airdog IEF.