Larger air cleaners

With over 25 years of experience of cleaning air in indoor environments, we have used our expertise and customer knowledge to develop an assortment of powerful, stand-alone air cleaners that create healthy air quality for people, products, and processes.

In many indoor environments, the capacity and efficiency of the installed ventilation system is not sufficient to maintain good and healthy air quality. Airborne pollutants and high particle levels can have a negative effect on people, products and processes. Freestanding air cleaning solutions are a cost and energy efficient addition to complement the existing ventilation system.

Our range of larger air cleaners consists of four powerful and efficient air cleaning solutions, where each unit is configured with the filter and accessories that are optimal for your needs.

All QleanAir air cleaners have mechanical filtration, automatic air flow control and regular service. This ensures constant air flow and efficiency over time.

FS 70 – a flexible air cleaner with a wide range of applications
Suitable for dusty industrial and warehouse environments, as well as for offices and public operations. Can be used to clean air in premises as well as to provide processes with filtered air. QleanAir's best-selling air purifier with a large customer base across Europe.

FS 70 FG (Food Grade) – for the beverage and food industry
This uses the same filtration technology as FS 70 but with design and details adapted to the hygiene requirements in the food industry. Stainless steel chassis, food-grade seals and gaskets, as well as smooth and rounded edges.

FS 70 HEPA – air purification in hospitals and care environments
FS 70 with HEPA 14 filters - the filter class commonly used to filter out bacteria, viruses and other airborne contaminants in sensitive medical environments. Mainly aimed at health care environments with high standards of cleanliness, mobility and low noise levels, but also suitable for other businesses in need of HEPA-filtered air.

FS 90 – an extra powerful air cleaner for large spaces
The FS 90 is one of the most powerful air cleaners on the market, with an air flow of up to 10,000 m3/hour. Suitable for large halls and spaces, e.g. warehouses, logistics centers, distribution centers, production facilities and other similar industrial environments. Also available in a roof-hung version.

Are you unsure of what solution suits your business? Contact us and we will guide you to the best solution for your needs.

Choose which air cleaner suit your needs


Air purification for hospitals and healthcare environments

Healthcare centers, emergency rooms, infectious disease wards, eldercare, and dental practices. These are only a few examples of all the activities that exist within the healthcare and care sector.

Hygiene requirements can vary greatly between different care environments, but they are all socially critical functions with a need for an indoor environment and air quality that promotes good health and reduces the spread of infection.

Air purification in care environments

The built-in ventilation is not always effective enough to provide healthy air quality and to control the spread of airborne microorganisms. Freestanding air purification solutions are an effective complement to the existing ventilation in care rooms as well as public areas.

A good air purification solution is customized to the environment in which it will be installed. Air purifiers for care environments should maintain a consistent level of efficiency over time, it should be possible to move them when needed and they should have a high capacity without disturbing patients or staff. Air purifiers that will be installed in sensitive environments, e.g. in intensive care rooms, should have HEPA 14 filters.

Protecting staff, patients & visitors

Healthcare environments have a constant stream of new people, all potential carriers of bacteria and viruses. Healthy air quality is important for everyone staying in the premises, staff as well as patients and visitors.


When infectious agents such as bacteria and viruses spread, we talk about different routes of infection; one and the same infectious agent can have several routes of infection. Some of the most common are contact infection, droplet infection and airborne infection. Let us take a closer look at the latter two.

What is droplet infection?

When a disease-stricken person coughs or sneezes, small droplets (micro-aerosols) are dispersed in the air. The small drops can come into contact with the mucous membranes of our airways, either directly via the air or via our hands when we touch our face. The cells in the mucous membranes are very sensitive to contact as they are not covered by any protected skin. This mode of transmission is called droplet infection and is common for respiratory viruses such as colds and influenza.

According to most experts, exhaled air should also be included as a source of drip infection. Our warm and humid exhaled air contains water vapor (it is the small cloud of moisture you can see when you exhale on a winter day or when you breathe on a window or mirror). The droplets in the exhaled air are only about 1 µm*, very small compared to the droplets that spread when we cough or sneeze, which are that is about 10 times larger. Smaller droplets float in the air for longer periods of time and are easier to inhale. A single breath can contain 1 000–50 000 such microdroplets.

The droplets remain in the air for a some time, but it is difficult to know how long, how far they can move and how much is needed to pose a risk of infection. The microdroplets are also affected by the temperature, humidity and movement of the air (airflows). 

Droplets that fall onto a surface and then pass on the infection via an object, e.g. a table top or a handle, are included in the contact contamination category instead.

*µm is an abbreviation of micrometer, and is a unit of length used for particle size. 1 µm is 0.000 001 meter (one millionth of a meter).

Droplet infection, airborne infection or aerosol infection?

It is important to point out that the term droplet infection is not the same as airborne infection, even though the droplets are in the air for a certain period of time.  If the droplets can dry up into microscopically small grains, the virus can travel much longer distances in the air. This significantly increases the risk of spread and inhalation and is called airborne infection. Measles and chickenpox are examples of such viruses.

Sometimes the term aerosol infection is also used. Aerosols are a term for small particles that are atomized in a gas, usually air. Consequently, both droplet infection and airborne infection can be included when using the term aerosol infection.

External sources
The Swedish Work Environment Authority
WHO transmission of virus causing Covid-19
Deutsche Lungenstiftung
AAF International

QleanAir FS 70 HEPA
– for sensitive environments

QleanAir FS 70  HEPA is based on our best-selling air purifier QleanAir FS 70, equipped with a filter configuration and properties that are optimal for environments with high standards of cleanliness.

  • Filter assembly: We use mechanical filtration that does not add any substances to the air ensuring efficiency over time. The main filter in FS 70  HEPA is HEPA 14, with at least 99.995% filtration efficiency for particles of size 0.1–0.2 µm (MPPS). The unit also has a class ePM1 60% pre-filter that protects and extends the life of the HEPA filter.
    Learn more about HEPA filtration a little further down.

  • Automatic airflow control: FS 70  HEPA is equipped with automatic airflow control. This means that it regulates the fan itself ensuring the correct air volume supply at all times. Without this function, the more the filter is filled, the poorer the air purification.

    Mechanical filtration in combination with airflow control and regular service will ensure that the air purifier works at constant efficiency and airflow at all times.

  • Energy-efficient and cost-effective air purification: FS 70  HEPA is a very powerful air purifier with an airflow of up to 3,000 m3 per hour. Since comfort can be affected by an airflow that is too high, the air purifier should be set to a level based on room size and needs. We recommend at least ten air changes per hour in healthcare settings. A unit set at 1200 m3/h in a room of about 100 m3 means that the air in the room is replaced every five minutes. It is a very cost-effective and energy-efficient way to circulate and purify the air.

  • A high degree of purification with a low noise level: A powerful air purifier does not have to mean loud noise. In the 1,200 m3/h speed mode (a recommended level in many rooms), the sound level is less than 35 dB(A). This is comparable to a whisper that is usually at around 30 dB(A) and a normal quiet conversation tone at around 60 dB(A).

  • Simple installation & handling: FS 70  HEPA is separate from existing ventilation and can easily be plugged into a standard electrical outlet. The airflow is adjusted via a panel on the front and has wheels making it possible to quickly move the air purifier as the need arises. Air is sucked into the front of the machine and the clean air is distributed through the outlets on the top. The unit can be equipped with a spiro tube or textile device for customized air distribution and transformed to create under-pressure or overpressure rooms.

  • Service & warranty: Clean air is a combination of service and product. QleanAir technicians perform regular service and filter replacements to ensure functionality and reliability. Via our service agreements, the function of all our air purifiers is guaranteed throughout their service life.

Mechanical filtration with HEPA 14

Constant efficiency and degree purification over time.

Automatic airflow control

Energy-efficient and cost-effective air circulation.

A high degree of purification,
low noise level

Effective air purification without disturbing patients and staff.

Protects human health

Healthy air quality for everyone staying at the premises.

What does HEPA mean?

HEPA (High Efficiency Particulate Air) implies high-efficiency air filters, classified according to standard EN 1822 for particulate filters. The filters are divided into different classes depending on how good they are at filtering out the particle size that is most difficult to capture, so-called MPPS (Most Penetrating Particle Size).

HEPA 14 in healthcare

HEPA 14, also known as H14, is the filter class commonly used to filter out bacteria, viruses and other airborne pollutants in sensitive healthcare environments, such as viruses. in operating theaters and infection wards. 

HEPA 14 has a filtration efficiency of at least 99.995% for particles of size 0.1–0.2 µm*. This is the particle size that is most difficult to capture, MPPS. For larger as well as smaller particles, the filter even has a filtration efficiency that is greater than 99.995%.  

Genuine HEPA

Sometimes a product name contains the word HEPA with an accompanying word, e.g. HEPA Quality or HEPA Rated, without the product being equipped with HEPA filters. Genuine HEPA filters are tested individually and delivered by the manufacturer together with a test protocol. A supplier of products with HEPA filters can always verify this with test protocols.

*µm is an abbreviation of micrometer, and is a unit of length used for particle size. 1 µm is 0.000 001 meter (one millionth of a meter).

Image: Close-up of fiberglass in a HEPA 14 filter, magnified 4,000 times.

Creating overpressure or under-pressure rooms

One advantage of FS 70  HEPA is that it can be transformed to create positive and negative pressure rooms with HEPA filtered air, recommended by the European Infectious Disease Control Authority for certain infectious departments.

A unit can handle the air in one or more rooms simultaneously. The application is quick to build up and can be modified back to a stand-alone air purifier if there is a change in needs.

Contact us for more information about positive and negative pressure rooms.


Model QleanAir FS 70 HEPA
Material Powder-coated steel
Height/Height on wheels

692 mm
1527/1652 mm
580 mm
Weight 110 kg

0–2000 m3/h.
Particle filters:
Main filter

ePM1 60% (ISO 16890)
HEPA 14 (EN 1822)
Speed control:
Incremental power levels/Automatic airflow control
Seamless / 3 positions

The technology behind the solution

1 INTAKE - Captures pollutants

The intake of the QleanAir FS 70 HEPA is strategically placed at the front unit to maximize the intake volume. For safety reasons, the intake is protected by a grill.

2 FILTRATION — Separation of particles and pollutants

Harmful particles and airborne pollutants, including viruses and bacteria are effectively captured and removed from the air via a pre-filter and a HEPA 14 filter.

3 EXHAUST – Purified air is returned to the environment

After the air has been purified, it is returned to the room through two exhausts on the top of the unit. The unit can be equipped with spiral tubes or textile diffusers for customized air distribution.


Can QleanAir FS 70 HEPA filter all viruses?
There are over 600 types of viruses; how a specific virus behaves is an extremely complex issue. When new viruses emerge, in-depth studies on how the specific virus spreads are required. Such studies take time and for new viruses such as the coronavirus SARS-CoV-2, there are still no reliable answers.

All HEPA 14 filters are tested individually to ensure at least 99.995% filtration efficiency for 0.1–0.2 µm (MPPS) particles. HEPA filters in combination with continuous airflows reduce the risk of airborne infection. However, air purification should be considered as a compliment and not a replacement for existing ventilation and personal protective equipment.

How many air purifiers do we need?
This depends on the size of the room, the desired air changes per hour, and how sensitive it is to affect comfort. When you know how big the room is in cubic meters (L x B x H), the number of air changes needed per hour (usually at least ten), is determined. An air purifier can handle 3000 m3/h. This, however, is at the maximum level resulting in higher noise levels and a greater risk of draft. In environments where comfort may be affected, the air purifier should be set at approximately 1200 m3/h. In environments with high noise levels and a lot of movement, the air purifier can have a higher airflow without being perceived to be disruptive. 

How do you change a filter?
QleanAir is a supplier of clean air as a service, not as a product. We measure particle levels before and after installation and then perform regular service to ensure retained performance and efficiency over time. With QleanAir's service, the function of your FS 70 HEPA is guaranteed for its entire service life. If visits by service technicians are not possible in your business, we will find a solution that suits your needs.  

I would like to know more about air purification in healthcare environments; who do I contact for the fastest response?
Send us an e-mail to Normally we will get back to you within 24 hours (please specify your questions in the email). On our contact page, there is a form. Of course, you can also phone us at +46 (0)8 556 979 00, non-holiday weekdays 8am–5pm.

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