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Hepa Air Scrubber

HEPA Air Scrubber

What is HEPA air scrubber?  

hepa air scrubber
hepa air scrubber

A HEPA air scrubber is a device that uses a high-efficiency particulate air (HEPA) filter to remove airborne pollutants from the air. HEPA filters are very effective at removing small particles, including dust mites, pollen, mold spores, and smoke.

HEPA air scrubbers are often used in commercial and industrial settings, but they can also be used in homes and other residential settings. They are especially effective for people with allergies or asthma, or for those who live in areas with high levels of air pollution.

HEPA air scrubbers work by drawing air through the HEPA filter. The filter traps the pollutants in the air, and the clean air is then released back into the room.

HEPA air scrubbers are available in a variety of sizes and styles. Some models are designed for small spaces, such as bedrooms or offices. Other models are designed for large spaces, such as warehouses or factories.

When choosing a HEPA air scrubber, it is important to consider the size of the space you need to clean, the type of pollutants you want to remove, and your budget.

Here are some of the benefits of using a HEPA air scrubber:

  • Removes a wide range of airborne pollutants, including dust mites, pollen, mold spores, smoke, and bacteria.

  • Can help improve indoor air quality and reduce allergy and asthma symptoms.

  • Can help reduce the risk of respiratory infections.

  • Can help remove odors from the air.

HEPA air scrubbers are a safe and effective way to clean the air in your home or office. They are especially beneficial for people with allergies or asthma, or for those who live in areas with high levels of air pollution. 

How Does a hepa Air Scrubber Work? 

hepa air scrubber process
hepa air scrubber

A HEPA (High Efficiency Particulate Air) air scrubber operates by using a combination of mechanical filtration and air circulation to remove airborne particles from the surrounding environment. Here’s how a HEPA air scrubber typically works:

  • Air Intake:

  • The air scrubber is equipped with a powerful fan or blower that draws in contaminated air from the area or room where it is placed.

  • Pre-Filtration:

  • Many HEPA air scrubbers include pre-filters designed to capture larger particles like dust, debris, and pet hair. These pre-filters help prevent the HEPA filter from clogging quickly and extend its lifespan.

  • HEPA Filtration:

  • The heart of the HEPA air scrubber is its HEPA filter. HEPA filters are constructed with a dense matrix of fine fibers that create a labyrinth-like path for air to pass through. This design is highly effective at trapping tiny particles, including allergens, pollen, pet dander, bacteria, viruses, and other airborne contaminants. HEPA filters are capable of capturing particles as small as 0.3 microns with an efficiency of 99.97% or higher.

  • Airflow and Purification: As the contaminated air passes through the HEPA filter, the particles are physically trapped within the filter’s fibers. Clean, purified air is then released from the air scrubber’s outlet.

  • Optional Secondary Filtration:

  • Some HEPA air scrubbers may feature additional filtration stages, such as activated carbon filters, which adsorb odors, gases, and volatile organic compounds (VOCs). This added filtration step helps address specific air quality concerns beyond particle removal.

  • Air Circulation:

  • The fan or blower continues to circulate air through the HEPA filter and optional secondary filters as needed. This ensures that the air in the room is continually purified, maintaining a desired level of air quality.

  • Continuous Operation:

  • HEPA air scrubbers are designed for continuous or intermittent operation, depending on the user’s needs. They can be left running to maintain clean indoor air quality, especially in spaces where there is a high concentration of airborne contaminants.

  • Maintenance:

  • Regular maintenance is crucial to keep the HEPA air scrubber functioning effectively. This includes periodically replacing the HEPA filter and any other filters, cleaning or replacing pre-filters, and following the manufacturer’s maintenance recommendations.

HEPA air scrubbers are widely used in various environments, including homes, offices, construction sites, healthcare facilities, and more, to provide clean and healthy indoor air by removing a wide range of airborne particles and allergens.

When is an Air Scrubber Needed? 

An air scrubber is needed in various situations where there is a need to improve indoor air quality by removing or reducing the concentration of airborne contaminants. Here are some common scenarios when an air scrubber is beneficial:

  • Construction and Renovation: During construction or renovation projects, there is often a significant amount of dust, debris, and potentially harmful particles released into the air. Air scrubbers help control airborne particulates, ensuring a healthier and cleaner environment for workers and occupants.

  • Mold Remediation:

  • When dealing with mold problems, especially in areas with extensive mold growth, an air scrubber can help capture and remove airborne mold spores, preventing them from spreading to other parts of the building.

  • Water Damage Restoration:After water damage, such as flooding or leaks, an air scrubber can aid in drying out affected areas and preventing the growth of mold and mildew by removing excess moisture and airborne contaminants.

  • Smoke and Fire Damage Cleanup:

  • Air scrubbers are valuable for removing smoke particles, soot, and odors following a fire or smoke-related incident, improving indoor air quality and making the space habitable again.

  • Hazardous Materials Cleanup:

  • When dealing with hazardous materials or substances, such as asbestos or lead-based paint, air scrubbers can help control the release of airborne particles, protecting workers and occupants from exposure.

  • Healthcare Settings:

  • Hospitals and healthcare facilities use air scrubbers to maintain clean and sterile environments by removing pathogens, bacteria, and viruses from the air, helping to prevent the spread of infections.

  • Allergen Control:


  • Individuals with allergies or respiratory conditions may use air scrubbers in their homes to reduce allergens like pollen, pet dander, and dust mites, leading to better indoor air quality and improved health.

  • Indoor Air Pollution:

  • In areas with high levels of indoor air pollution, caused by factors like smoking, cooking, or poor ventilation, air scrubbers can help remove contaminants and improve overall air quality.

  • Flood and Sewage Cleanup:

  • After a flood or sewage backup, air scrubbers can assist in removing moisture from the air and capturing harmful airborne particles, preventing health hazards and mold growth.

  • General Air Quality Improvement:

  • Some people choose to use air scrubbers as a proactive measure to maintain clean indoor air, particularly in regions with poor outdoor air quality or during seasons with a high pollen count.

In summary, air scrubbers are essential tools for improving indoor air quality in various situations where airborne contaminants pose a health risk or where clean and safe air is necessary. They can be employed in both residential and commercial settings to address specific air quality concerns and create a healthier living or working environment. 


History of hepa air scrubber

The genesis of HEPA air scrubber can be traced back to the World War II era when gas masks were critical for soldiers’ safety. A fortuitous discovery was made when a piece of paper found in a German gas mask displayed exceptional efficiency in capturing chemical smoke. The British Army Chemical Corps replicated this finding and began mass-producing similar filters for their gas masks. However, they faced a challenge when it came to providing clean air in operational headquarters where individual gas masks were not practical.

To address this need, the Army Chemical Corps developed a novel solution – a mechanical blower and air purifier unit. This unit incorporated a specially designed filter featuring deeply-pleated cellulose-asbestos paper with spacers between the pleats. It was referred to as an “absolute” air filter and laid the foundation for further advancements in filter technology, eventually leading to the HEPA filter.

The HEPA air scrubber took its next significant step in the 1940s during the Manhattan Project. At that time, the US Army Chemical Corps and the National Defense Research Committee were focused on preventing the spread of airborne radioactive contaminants. They required a filter capable of effectively removing radioactive materials from the air. Nobel Laureate Irving Langmuir was enlisted to provide guidance on filter test methods and material selection. He identified particles of 0.3 microns as the most challenging to filter, earning them the designation of the “most penetrating size.”

Commercialization of the HEPA scrubber took place in the 1950s, and the original term was eventually registered as a trademark, later becoming a generic term for highly efficient filters. As the years passed, HEPA filters continued to evolve to meet the increasingly stringent air quality requirements of various high-tech industries such as aerospace, pharmaceuticals, hospitals, healthcare, nuclear fuels, nuclear power, and integrated circuit manufacturing.

Classification of HEPA air scrubber

hepa air scrubber

HEPA, which stands for High-Efficiency Particulate Air, represents a set of filters renowned for their ability to remove an impressive 99.9% of particulate matter from the air flowing through them. This classification has been bestowed upon HEPA filters by authoritative bodies such as the EPA, EN (European Norms), IEST (Institute of Environmental Sciences and Technology), and other reputable organizations. Within the HEPA air scrubber   classification, there exists a spectrum of filter types, each varying in their capacity to efficiently cleanse an airstream to varying degrees.

Over the past two decades, HEPA air scrubber have risen in significance and are now considered indispensable for both homeowners and sensitive industrial applications. As a result, numerous agencies and institutions have devised classification and rating systems to aid manufacturers and the general public in understanding their usage and effectiveness. Among these systems is the Minimum Efficiency Reporting Value (MERV) system, which assigns HEPA air scrubbers a rating between 17 and 20, along with recommendations on where they are most suitable for deployment.


Ultra-Low Particulate HEPA air scrubber

 ULPA HEPA air scrubber share a close kinship with HEPA air scrubber but are recognized for their even greater efficiency in removing airborne contaminants. To earn the ULPA classification, a filter must demonstrate the remarkable capability to eliminate a staggering 99.999% of particles measuring 0.12 µm or larger in diameter. Much like , ULPA  HEPA air scrubbers are constructed from intricately intertwined and randomly oriented fibers, creating a web-like structure that irresistibly attracts particles as they traverse the filter medium. ULPA HEPA air scrubber boast an extensive repertoire of particulate matter they can capture, with the exception of one: viruses. It’s noteworthy that while ULPA HEPA air scrubbers excel at trapping a broad range of microscopic substances, they are not designed to intercept viral particles.


Duct and Fan  HEPA Air Scrubber Units


HEPA air scrubbers integrated into ducts and fan units find their niche in clean rooms and laboratories, where the imperative is to rid the air of detrimental airborne particles. These specialized units are meticulously engineered to purify the air circulating within clean rooms, whether it’s characterized by turbulent or unidirectional ventilation patterns. What sets duct and fan HEPA air scrubber units apart is their unique ability to establish positive room pressure, effectively curtailing contamination that might otherwise seep in through ceiling gaps. These units operate as self-contained entities, offering an adaptable and efficient means of eradicating contaminants, contributing to the maintenance of pristine air quality within controlled environments.


Parts of hepa air scrubber:

hepa air scrubber parts

Filter Fibers

HEPA air scrubbers are constructed using tightly woven fibers of polyester, polypropylene, or fiberglass, each with a diameter of less than one micron. These minuscule fibers are intricately arranged in a complex and haphazard fashion, with no discernible straight path through the filter material.

The gaps between these fibers are exceedingly tiny, measuring less than half a micron in size. This minute spacing is the key to HEPA filters’ remarkable ability to capture particles as small as 0.3 microns. When viewed under a microscope, as illustrated below, the most striking feature is the lack of uniformity in the arrangement of these fibers. This irregularity in the fiber placement is what enables HEPA filters to effectively trap a wide range of particles, ensuring cleaner and purer air.


HEPA air scrubber  Frame:

HEPA air scrubbers exhibit versatility in the materials used for their frames. In the context of industrial and manufacturing settings, these filters demand frames crafted from robust and enduring materials. Examples include carbon steel, aluminum, stainless steel, and galvanized steel, each chosen for its durability and resilience. The dimensions of the frame must undergo meticulous consideration, as its impact on the airflow resistance, or pressure drop, is a crucial factor to manage effectively. 

Adhesives for HEPA air scrubber:


Choosing the right adhesive for crafting HEPA air scrubber is a critical decision, necessitating adhesives that not only pose no risk to filter functionality but also maintain their integrity over time, refraining from migrating into the filter’s fiber material. Among the trio of commonly employed adhesives for HEPA filters, we find polyurethane, silicone, and ceramic.

Polyurethane takes center stage in HEPA air scrubber construction, primarily due to its compatibility with the filtration process. It excels at securely anchoring the fiber material within a metal frame and offers the convenience of room temperature curing or accelerated curing via heat.

Silicone adhesives, characterized by their flexibility, temperature resistance, and availability in varying degrees of hardness, transparency, and viscosity, provide a versatile option. They demonstrate resilience against shocks, vibrations, high temperatures, and corrosion, while also serving as effective electrical insulators.

Ceramic adhesives, on the other hand, establish strong bonds between the filter material and stainless steel or aluminum frames. Their impeccable suitability for  HEPA air scrubber extends to bonding various internal components to the filter structure, contributing to the filter’s robust construction.


HEPA air scrubber Gasket:

hepa air scrubber gastek
hepa air scrubber

Gaskets play a pivotal role in ensuring the optimal performance of HEPA air scrubbers and are commonly fashioned from die-cut urethane rubber and closed-cell sponge rubber. Opting for rubber as the gasketing material offers both economic advantages and ease of installation when compared to liquid silicone systems.

To eliminate any concerns related to mold release, the rubber material undergoes a meticulous process of splitting or skiving its top layer. Gaskets are then precision-cut from sheets or rolls to achieve the desired shape.

These gaskets often come in three typical configurations: strip, one-piece, and interlocking designs. Among these, the interlocking design stands out as the most cost-effective and user-friendly choice. Attachment of gaskets to the filter frame is achieved using solvent-activated or pressure-sensitive adhesives. Any joints within the gasket structure are sealed with RTV (Room Temperature Vulcanization) materials compatible with closed-cell rubbers.

Of these gaskets, the die-cut variety is the most widely employed, being affixed to the outer periphery of the frame and pressed firmly against its flat surface. Importantly, all gaskets used in HEPA filters boast resistance to oil and ozone, ensuring their long-term durability and reliability.

Separators in HEPA air scrubber:

Within HEPA air scrubbers, separators serve a crucial role by being strategically positioned between the pleats or folds of the filter material. These separators can be crafted from materials such as aluminum, glass fiber strings, or hotmelt substances. Their primary function is to gently spread apart the pleats within the filter material, effectively enhancing the filter’s capacity to capture particulate matter while minimizing resistance to the flow of air. This arrangement optimizes the filter’s performance in trapping particles without impeding the circulation of air through the system.

Completely Assembled HEPA air scrubber:

The preceding explanation of HEPA air scrubber design provides a broad overview of the fundamental components typically incorporated into their production. It’s important to note that each manufacturer employs their unique and proprietary techniques when crafting HEPA air scrubber, and these methods may deviate from the general description outlined here. In essence, the specific nuances and intricacies of  HEPA air scrubber construction may differ between manufacturers as they bring their distinct approaches and innovations to the table. 

Uses of hepa air scrubber:

In recent years, thanks to rapid technological advancements, air filtration systems have emerged as integral components in the management of buildings and various industrial processes. This transformation is particularly pronounced in technical and craft industries, where maintaining high air quality is paramount to ensure the safety and well-being of workers. HEPA filters have now become indispensable in these contexts, serving as a non-negotiable element for effectively eliminating contaminants and maintaining air purity.

The utmost significance of HEPA air scrubbers is underscored in clean room environments, where even the tiniest particles, as minuscule as 0.1 μm, can disrupt or compromise critical processes. These clean rooms are meticulously classified based on stringent criteria related to the quantity and size of airborne particles per unit of air volume. HEPA air scrubbers shoulder the vital responsibility of not just meeting but surpassing these stringent requirements, ensuring the pristine quality of air in these highly controlled environments.

Biosafety Cabinet of HEPA air scrubber:

Biosafety cabinets serve as specialized enclosures designed to safeguard workers who handle hazardous substances. These cabinets are engineered with a vertical laminar airflow system that functions as a protective barrier against airborne particles and microorganisms. Integral to their operation, HEPA air scrubbers  are employed to purify the air before it is released back into the working area and the surrounding environment.

Biosafety cabinets are categorized into three distinct levels: Classes I, II, and III. Classes II and III provide comprehensive protection for workers, the external environment, and the integrity of the materials being handled. In contrast, Class I cabinets offer a more basic level of protection, primarily focusing on safeguarding the surrounding environment and personnel.

When correctly utilized and maintained, biosafety cabinets prove highly effective in minimizing the risk of contamination, the transmission of diseases, and the dispersion of hazardous materials, contributing significantly to safety and well-being in various laboratory and workplace settings.

Clean Rooms:

Cleanrooms represent environments demanding the most rigorous contamination control measures due to their involvement with a diverse range of substances, products, and materials that could suffer adverse effects from unfiltered and impure air. The term “clean room” encompasses a broad spectrum of workspaces meticulously designed and constructed to establish an impeccable and ideal set of working conditions.

Within the realm of cleanrooms, there exists a specialized community of engineers and designers who excel in the art of crafting sealed and purified spaces, where even the tiniest elements are promptly captured and eliminated.

Cleanroom classifications hinge on the quantity and size of particulate matter present within the space. The fewer the particles and the lower their density per cubic foot, the higher the cleanroom’s classification. A pivotal aspect of maintaining the desired environment lies in the filtration system, heavily reliant on the efficacy of HEPA filters strategically positioned in ceilings, walls, or cabinets.

As depicted in the accompanying image, every facet of a cleanroom undergoes meticulous scrutiny to ensure that the established conditions adhere to the highest possible standards of freedom from contamination and particles.

Hepa air scrubber in Hospitals:

Much like their indispensable role in clean rooms, HEPA air scrubber stand as a crucial requirement within healthcare settings, particularly hospitals. They serve as a formidable line of defense against the potential peril of cross-contamination among patients and the transmission of infectious and hazardous diseases. In the era of the COVID-19 pandemic, HEPA air scrubbers have assumed even greater significance, emerging as a pivotal component in the battle against the disease’s dissemination. In this context, these filters play an essential role in mitigating the risk and safeguarding the well-being of both hospital staff and patients alike. 

Surgical Suites:


Maintaining pristine and uncontaminated air within an operating room is of paramount importance. To achieve this, HEPA air scrubbers take center stage in the process, serving as the frontline defense against airborne hazards that could pose a grave risk to patients when their organs are exposed during medical procedures. These HEPA air scrubbers are instrumental in purging the air of any potential contaminants, ensuring a safe and sterile environment that is absolutely vital during surgical interventions.




The vulnerability of newborns to various illnesses stems from their underdeveloped immune systems. In this context, HEPA air scrubbers emerge as a pivotal safeguard against the threat of bacteria, viruses, and infectious agents lurking in the air, particularly within incubators and neonatal intensive care units. These HEPA air scrubbers play a crucial role in guaranteeing a pristine and microbe-free airflow, providing an essential layer of protection to these delicate infants, whose health is highly susceptible to environmental factors.

Warming Beds: 

Warming beds, integrated into closed-circuit forced air systems, are instrumental in maintaining patients at precise and regulated temperatures. Within these forced air systems, HEPA filters take on a pivotal role by effectively capturing and isolating hazardous particulate matter, thus preventing it from reaching a patient’s bed. This dual-functionality of warming beds and HEPA filters ensures a safer and cleaner environment for patients, reducing the risk of exposure to harmful contaminants. 



While the conventional perception of a warehouse often revolves around short-term storage before shipment, there are instances where items can remain in warehousing facilities for extended durations. Despite the expansive nature of warehouse spaces, prolonged storage can give rise to stagnant air rife with detrimental airborne particles, dust accumulation, and the presence of unclean surfaces.

In these scenarios, characterized by prolonged storage periods, the conditions become conducive for the deployment of HEPA air scrubbers. These HEPA air scrubbers prove exceptionally adept at the task of eliminating harmful particles and revitalizing the air, contributing to a cleaner and fresher environment within the warehouse, even in cases of protracted item storage.



 The fragile immune systems of newborns render them highly susceptible to a diverse spectrum of illnesses. HEPA air scrubbers play a pivotal role in eliminating bacteria, viruses, and infectious agents from the air within incubators, with particular significance in neonatal intensive care units. These HEPA air scrubbers serve as an indispensable safeguard, guaranteeing an uninterrupted and microbe-free airflow. This not only ensures a pristine environment but also offers crucial protection to these vulnerable infants, who are particularly sensitive to the presence of disease-causing microorganisms. 


Mold Protection: 

 Weather conditions pose a lurking threat in the form of mold buildup, which, much like bacteria, remains invisible but holds significant potential for harm. The combined utilization of HEPA air scrubbers and HEPA filters emerges as a potent strategy for purifying the air of mold, thereby shielding the public from the perils of mold contamination.

In the face of inclement and perilous weather, structures ranging from residential homes to industrial facilities and production sites often contend with the ingress of moisture. This moisture, in turn, fosters the growth of mold. While the initial response typically involves drying out affected areas to render them habitable, it is crucial to recognize that drying alone may not suffice. Airborne mold growth necessitates the intervention of a HEPA filtration system for thorough eradication, ensuring a safe and mold-free environment.


Pharmaceutical Industry: 

 The pharmaceutical sector shares similar imperatives with hospitals when it comes to stringent control over contaminants and the management of infectious or hazardous substances. In the production of pharmaceuticals, unwavering quality assurance is an absolute imperative, meticulously overseen by the Food and Drug Administration (FDA). Given the nature of materials and substances handled within this industry, the FDA mandates the use of HEPA air scrubbers with efficiency ratings of H13, H14, or U15.

Furthermore, to align with FDA standards, every installation of HEPA filters must undergo rigorous testing for leaks, efficiency, and reliability. Given the industry’s inherent complexities and the potential risks involved, it becomes imperative for air processing equipment to undergo routine inspections and approvals, ensuring the utmost safety and compliance.


Fighting COVID-19: 

 COVID-19 particles have the capability to linger in the air for extended periods following exposure. Recognizing this, the EPA, the Centers for Disease Control (CDC), and various other authoritative agencies advocate for the utilization of air purifiers equipped with 

HEPA air scrubbers to comprehensively eliminate contaminants, including COVID-19, from the ambient air. The choice of an appropriate air purifier hinges on the dimensions of the area in which it will be deployed, with a crucial consideration being its capacity to manage the requisite airflow volume. 

 HEPA air scrubber Testing:


HEPA air scrubber testing is a rigorous process carried out by manufacturers to assess the efficiency, integrity, and overall performance of these filters. These evaluations are integral to the production workflow, ensuring the final product’s quality. However, an equally vital step involves testing  HEPA air scrubbers once they are installed.

Flow Rate Assessment:

Before delving into any specific evaluation, it’s essential to examine the flow rate through the HEPA air scrubber . The International Organization for Standardization (ISO) provides a framework for on-site HEPA air scrubber testing to detect leaks and validate the airflow volume. These standards offer some flexibility to accommodate variations between vendors and customers.

Aerosol Testing:

Aerosol testing involves the use of both cold and hot aerosols, as well as microspheres, to assess the installation of HEPA air scrubbers in clean room environments. Cold aerosols are generated from oil-based liquids. The test involves setting the concentration of test aerosols upstream of the filter, typically at concentrations of 10µg/l and 100µg/l. Lower concentrations are recommended to prevent blockage or bleed-through.

Leak Scanning:

To identify potential leaks, a probe is employed to scan the system. The probe’s size influences its effectiveness, with smaller probes generally providing better results than larger ones. Additionally, the scanning velocity plays a role in the accuracy of the scan.

In ,HEPA air scrubbers there is a gap between the filter and its housing, with the gasket situated at the rear. To detect leaks in the frame-to-housing connection, a probe is inserted to scan the area. When there is a gasket leak, particles disperse and fill the gap, leading the scanner to encounter a concentration of particles at a distance from the actual leak, as depicted in the image below. 

Identifying Filter Face Leaks

Detection of filter face leaks involves a methodical process employing a probe that systematically scans the entire face of a HEPA filter. The probe moves across the filter with overlapping strokes, proceeding at a controlled and uniform pace. This examination may necessitate multiple passes to precisely locate the source of a leak. To enhance accuracy, a baffle plate can be positioned over the filter face, helping distinguish between gasket leaks and face leaks. During this process, the sample probe remains just a fraction of an inch above the filter’s surface to ensure that no leaks go unnoticed.

Remedying Leaks

Manufacturers and the Institute of Environmental Sciences and Technology (IEST) provide established procedures for addressing leaks. The IEST offers recommendations aimed at preventing blockages or restrictions in the filter during the repair process. Following any repairs, it’s imperative to retest the system to verify the effectiveness of the patching and ensure the unimpeded flow of air.

Importance of HEPA air scrubber Processes

The significance of HEPA filter processes underscores the necessity of thorough testing and examination to validate the performance of a HEPA air scrubber system. These precautions not only ensure optimal functionality but are also integral components of the installation process endorsed by manufacturers. 

Here are some questions and answers about HEPA air scrubbers:

Q1: What is a HEPA air scrubber?

 A1: A HEPA air scrubber is a device designed to improve indoor air quality by removing airborne particles, such as dust, allergens, and contaminants, using a High Efficiency Particulate Air (HEPA) filter.

Q2: How does a HEPA air scrubber work?

 A2: HEPA air scrubbers work by drawing in air through a fan, passing it through a HEPA filter, which captures particles as small as 0.3 microns, and then releasing clean, filtered air back into the environment.

Q3: What are the common uses of HEPA air scrubbers? 

A3: HEPA air scrubbers are commonly used in various settings, including construction sites to control dust, hospitals to prevent the spread of airborne infections, and in homes to reduce allergens and improve indoor air quality.

Q4: Are HEPA air scrubbers effective at removing viruses from the air?

 A4: HEPA air scrubbers are effective at removing airborne viruses, including some strains of the flu and COVID-19, as long as the viruses are attached to particles larger than 0.3 microns.

Q5: Can HEPA air scrubbers remove odors from the air?

 A5: HEPA air scrubbers can help remove some odors by capturing the particles that cause the odor. However, they may not be as effective at removing gaseous odors.

Q6: How often should the HEPA filter in an air scrubber be replaced or cleaned?

 A6: The frequency of filter replacement or cleaning depends on usage and the manufacturer’s recommendations. In general, HEPA filters should be replaced when they become visibly dirty or when airflow is reduced.

Q7: Are all HEPA filters the same in terms of quality and efficiency? 

A7: No, not all HEPA filters are created equal. The efficiency and quality of HEPA filters can vary, so it’s important to choose air scrubbers with certified HEPA filters to ensure proper filtration.

Q8: Can HEPA air scrubbers help with allergies and asthma? 

A8: Yes, HEPA air scrubbers are often recommended for individuals with allergies and asthma because they can effectively remove allergens like pollen, dust mites, and pet dander from the air, leading to improved indoor air quality.

Q9: Are there different sizes of HEPA air scrubbers available for various spaces?

 A9: Yes, HEPA air scrubbers come in various sizes and capacities to suit different room sizes and applications, from compact units for small rooms to industrial-sized scrubbers for larger spaces.

Q10: Can HEPA air scrubbers be used in combination with other air purification methods?

 A10: Yes, HEPA air scrubbers can be used in conjunction with other air purification methods, such as activated carbon filters and UV-C technology, to provide comprehensive air purification and odor control.

hepa air scrubber colourfull
hepa air scrubber

The Difference Between an Air Scrubber and Air Purification:

The terms “air scrubber” and “air purification” are often used interchangeably, but they refer to different methods and technologies for improving indoor air quality. Here’s a breakdown of the key differences between an air scrubber and air purification:


  • Air Scrubber:

  • An air scrubber is primarily designed to remove particles, dust, and contaminants from the air. It uses various filtration methods, including HEPA filters, to capture and trap airborne particulates. Air scrubbers are commonly used in construction sites, renovation projects, and industrial settings to control dust and maintain air quality.

  • Air Purification:

  • Air purification, on the other hand, is a broader term that encompasses a range of technologies designed to improve indoor air quality by removing or neutralizing various pollutants. This includes not only particles but also odors, gases, allergens, and microorganisms like viruses and bacteria. Air purifiers use various methods such as HEPA filtration, activated carbon, UV-C light, and more to address a wide spectrum of contaminants. 

  • Scope of Contaminant Removal:
  • Air Scrubber:

  • Air scrubbers focus mainly on physical particles and dust. They are effective at capturing larger particulates and may not address gaseous pollutants, odors, or microbiological contaminants.

  • Air Purification:

  • Air purifiers are more versatile and can address a wider range of pollutants. They are capable of removing allergens, odors, volatile organic compounds (VOCs), and even certain microorganisms, making them suitable for improving overall indoor air quality.

  1. Common Applications:

  • Air Scrubber:

  • Air scrubbers are commonly used in construction and renovation projects, as well as industrial environments where controlling dust and particulate matter is essential to maintain a safe and clean workspace.

  • Air Purification:

  • Air purifiers are used in various settings, including homes, offices, healthcare facilities, and commercial spaces to address a broader spectrum of indoor air quality concerns, including allergens, odors, and potential health risks.

  1. Technology:
  • Air Scrubber:

  • Air scrubbers typically use physical filtration methods like HEPA filters or electrostatic precipitators to capture particles. They do not usually incorporate additional features for addressing odors or gaseous contaminants.

  • Air Purification:

  • Air purifiers often employ a combination of technologies, such as HEPA or ULPA filtration, activated carbon filters, UV-C germicidal lamps, or photocatalytic oxidation to address a wider range of pollutants and provide comprehensive air purification.

In summary,

while both air scrubbers and air purifiers aim to improve indoor air quality, they differ in their primary function, scope of contaminant removal, common applications, and the technologies they employ. The choice between the two depends on the specific air quality concerns and the environment in which they are to be used.



 A  HEPA air scrubber stands as a high-efficiency pleated air filter renowned for its exceptional capacity to capture minuscule particles, even down to a size of one micron (µ) or one-thousandth of a meter. To attain the coveted HEPA standard, a filter must exhibit the prowess to eliminate 99.9% of particles, regardless of their size, with a particular emphasis on those as tiny as 0.3 micrometers or less. HEPA-rated filters demonstrate remarkable versatility by efficiently removing a wide array of impurities that escape the naked eye, including dust mites, pet dander, pollen, smoke, mold spores, and an assortment of invisible pollutants.

When delving into the realm of HEPA air scrubbers, it’s crucial to differentiate between “True HEPA” filters and their counterparts labeled as “HEPA Like,” “HEPA Type,” or “HEPA Style.” A bona fide HEPA filter must be capable of achieving a removal efficiency of 99.97% for particles measuring 0.3 micrometers in size.

hepa air collection
hepa air scrubber
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