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Room air purifiers with HEPA filters: 99.995% less viruses & bacteria

Energy-saving virus reduction


As temperatures drop, window ventilation can be an expensive way to reduce the level of viruses in indoor environments – with all the freshly warmed air escaping to the outside.

All our hepa air purifiers offer a much more energy efficient and effective answer to cutting viruses and creating a healthier environment.

"I recommend using the MANN+HUMMEL air purifier as a sensible supplement to the usual hygiene measures and regular ventilation, in order to reduce the aerosol concentration and thus the risk of infection in the family practice."

Dr. Jürgen Herbers, family doctor and member of the board of the Hausärzteverbands Baden-Württemberg

HEPA filter

Only safe with the EN 1822 suffix

  • HEPA means High Efficient Particle Air Filter.
  • There are two HEPA filter classes. H13 filters with 99.95% efficiency and H14 with 99.995% efficiency


  • The term HEPA is not trademarked and does not provide any indication of the quality or efficiency of the filter
  • Only HEPA filters that are tested and certified according to the EN 1822 standard reliably filter viruses and bacteria
  • The standard ensures that each filter is individually tested after manufacture according to strict guidelines

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Profen effectiveness

"In a real-life scenario with pupils, we were able to show [...] that the particle concentration is significantly reduced when an antiviral indoor air purifier is used during the phase when ventilation is not possible."

Prof. Dr. Achim Dittler, Karlsruhe Institute of Technology

KIT confirms effectiveness

Several studies from the Karlsruhe Institute of Technology (KIT) confirmed that our room air purifiers OurAir TK 850  (predecessor model of the OurAir SQ 1750) and OurAir SQ 2500 significantly reduce the number of particles in the room and thus contribute to reducing the risk of infection.

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Discover more about how our room air purifier keeps you safe

If you’re new to the benefits of anti-viral room air filtration systems, we’ve answered some common questions for you to discover how to start refreshing the air around you:

As winter approaches we will all be spending more time indoors. Which means it’s essential to keep your air virus-free and help combat COVID-19 in your office, gym, restaurant or school. But how can you be sure your air purifier will improve air quality and protect your colleagues and customers?

Don’t just take our word for it. The Karlsruhe Institute of Technology recently conducted a study on air purifier effectiveness, in both controlled surroundings and a real-life classroom situation. The studies confirmed that the OurAir SQ 500, OurAir SQ 1750 or OurAir SQ 2500 room air purifiers significantly reduce the number of particles in the room and contribute to reducing the risk of infection.

Whatever your space, a room HEPA* filter will deliver cleaner air.

*according to ISO 29463 and EN 1822

Yes, they are! In addition to virus-laden aerosols, our air purifiers also capture bacteria, free allergens and other microorganisms, which sometimes cause the most frequent reasons for absence from the office: flu, colds and allergy complaints.

Dr. Jürgen Herbers, a family doctor in Pleidelsheim, is of the same opinion: "Unfortunately, so many other pathogens remain in the post-corona period that we see an urgent need for efficient air filtration even later".

Thus, our room air purifiers with corona filter can, for example, also contribute to lower disease rates in the future.

Yes, room air purifiers are also useful after a vaccine has been provided and is available.

Of course, we all hope that the first vaccines will now be approved. But this is only one of the first, formal obstacles that have to be overcome. The vaccines still have to be produced, distributed and finally reach the people. The demand worldwide is very high, so it will take quite a long time to achieve a herd immunity of 60-70% of the population through vaccination. According to experts, corona infections are expected to continue until 2022 and this is why corona filtration is so important.

But Mobile, stationary or portable air purifiers are not a solution for the moment, they will also ensure a healthy indoor air quality even after the corona pandemic and thus be able to significantly reduce infection/cold-related absence rates from school or office. For example, room air filters also filter free allergens from the air and prevent allergy-related symptoms during the pollen season. The purchase of air purifiers with corona filters makes sense for any institution that wants to help contain the pandemic and at the same time respect the health protection of its employees. This applies in particular to schools and daycare centers, but also to public authorities and other places where on-site work and (reduced) public traffic is absolutely necessary (citizens’ offices, police authorities, schools, job centers, clinics and hospitals, nursing homes and many more). Even under "normal conditions", room air filters are useful because they help to filter pollutants and pathogens from the air and thus improve indoor air quality.

HEPA* (High Efficiency Particulate Air) filters are particulate matter filters that remove more than 99% of the smallest particles such as dust, mite eggs, pollen, smoke, bacteria and aerosols from the air. The extremely fine filter medium effectively separates the smallest particulate impurities from the air flow and ensures very clean air. Even the smallest suspended particles (< 0.1 µm) are reliably separated and ensure refreshed, clean air. Because of their efficiency in eradicating even tiny harmful micro-organisms HEPA* filters are used in room air purifiers in the medical sector, for example in operating theaters and laboratories.

HEPA* filters with virus protection are divided into filter classes H10 to H14 according to the European standard EN 1822. If a filter is categorized as performing at 99.95%, it belongs to filter class H13, and for 99.995% it belongs to filter class H14. When used in conjunction with an activated carbon prefilter in an air purifier, they are particularly effective against airborne aerosol droplets.

If you want protection from airborne viruses and to reduce the risk to your business, a room air cleaner is a simple, safe and scientifically proven solution. At MANN+HUMMEL we’ve got clean air covered.

* according to ISO 29463 and EN 1822

At MANN+HUMMEL we’ve been developing new ways to separate the useful from the harmful. We have 22,000 filter experts - more than 1,000 of which make up our R&D department - which work together to make our world a cleaner place. While air conditioning units traditionally either just heat or cool a space, our air purifiers for rooms actively improve indoor air quality by trapping unwanted particles and removing them from circulation.

A HEPA* (High Energy Particulate Air) filter is a mechanical type of filter. The air passes a huge homogenous layer of finest fibres.  The massive amount of fiber surface offers significant attraction for particulates and contaminants to get captured – even down to sizes below 0.1 μm [SK1] – taking them out of circulation. Our standalone units and HEPA* H14 filters work quietly and discreetly to remove particles from circulation. The air is clean, healthy and  free of any particulate contaminationan and can be recircled back into your building. 

*according to ISO 29463 and EN 1822 

What does a room air purifier do? We know that COVID-19 can be spread through airborne aerosols and that indoor air is likely to contain higher volumes of infected aerosols. These tiny droplets are emitted into the environment through breathing and speaking, before spreading throughout a room. By reducing the concentration of viruses in the air where effective ventilation isn’t possible, corona filters like anti-viral whole room air purifiers play a vital role in improving indoor air quality.

So, if you’re wondering how a room air purifier works, our room air filtrations system consists of either an all-in-one air purifier, or an upgrade of your HVAC system with HEPA* filters.

Once you’ve fitted the replacement filter to your HVAC system (HEPA* H13 is sufficient and will deliver 99.95% virus free air) or simply plugged in an corona filtration system like OurAir SQ 500, OurAir SQ 1750 or OurAir SQ 2500, then 99.995% of viruses, bacteria and other microorganisms will be extracted from the air.

*according to ISO 29463 and EN 1822 

The World Health Organization states levels of different sizes of particulate matter (PM) that enter the respiratory tract in the air should be no higher than 10߂g/m³ for PM2.5 and at or below 20߂g/m³ for PM10.

According to the Air Quality Index, PM2.5 levels of between 0-50 pose little or no risk to health; 51-100 might be a risk for small numbers of people with sensitivities; 101-150 is unhealthy air quality for sensitive groups; and anything over 150 is unhealthy, leading up to hazardous. The indoor air filter in a good quality HEPA* room air purifier will keep your building’s air quality at a safe level.

If you want protection from airborne viruses and to reduce the risk to your business, a room air cleaner is a simple, safe and scientifically proven solutions. At MANN+HUMMEL we’ve got clean air covered.

* according to ISO 29463 and EN 1822

Harmful particulates and gases in the air have a detrimental impact on human health. And in times of airborne virus outbreaks the focus is increasingly on the quality of the air we breathe. Virologists agree that COVID-19 spreads primarily through respirations, while transmission through surface smears or droplets is less common. Cleaner air contains fewer aerosols carrying these infectious particles. If you’re concerned about the current air quality in your workplace, we’ve designed an anti-viral room air filtration system with corona filters to help keeping you healthy.

Our room air filter solutions will give you the peace of mind that you’ve done everything possible to keep people safe in your building. A MANN+HUMMEL super-efficient air purifier will remove 99.995% of viruses, bacteria and other Class 14 microorganisms, completely exchanging the indoor air up to five times per hour. Which means you can continue operating successfully and keep your business thriving. If you want virus-free, clean air in your rooms, our products are the solution.

Here’s why you can breathe easy:

  • The OurAir SQ 500 small room air purifier is suitable for rooms up to 40m2 and provide virus-free air to smaller commercial spaces.
  • The OurAir  SQ 1750 room air purifier for rooms up to 140m2 has a HEPA H14 filter and cleans the air with a maximum air flow rate of 1750 m3/h.
  • The OurAirSQ 2500 features an HEPA H14* filter and is suitable for rooms up to 200m2. It has a maximum air flow rate of 2500 m3/h, making it so effective you can even use it in semi-open areas.
  • The HEPA* Upgrade for HVAC filtration consists of filter inserts that fit to your existing room air filtration system, with no additional running costs.

Depending on the size of your space and budget you can choose an all-in-one air purifier unit that you can place alongside other units, or a replacement air filter for your heating and cooling system. Both solutions keep your room virtually virus-free – just ‘Plug & Play’ for instantly cleaner, healthier air.

* according to ISO 29463 and EN 1822