Proven air purifier invented for Scandinavian hospitals

Rensair’s patented air purification technology, which combines H13 HEPA filtration with germicidal UVC light, was developed to meet the strict standards of Scandinavian hospitals and is independently validated by scientific research laboratories. It is now trusted by hospitals around the world, in every hemisphere.

Hospitals and Healthcare

Today, Rensair air purifiers are used broadly throughout the healthcare sector, including:

Primary Care: general practitioners and dental surgeries

Hospitals: especially in

  • General wards
  • Respiratory wards including Covid wards
  • Spirometry
  • Endoscopy
  • Radiology

Care homes, hospices and assisted living facilities

Rensair meets the standards for air cleaners recommended by leading authorities including the World Health Organization, CDC, SAGE and EPA.

NHS Confederation

Rensair is proud to be an Associate Member of the NHS Confederation and supports their aim by providing education and expertise on hospital-grade air purification to combat airborne viruses and bacteria. As a result, we hope to improve infection control standards across the NHS and facilitate a return to full capacity, thereby reducing the backlog caused by the pandemic.

Hospitals and Healthcare

Indoor air quality is a critical need for hospitals

Covid-19 has been devastating for hospitals around the world. In the UK, the NHS has been operating at a vastly reduced capacity due to infection control measures. As a result, it could take up to five years to clear the backlog. With further potential waves caused by new variants, waiting times could extend even further.

We now know that the biggest risk of Covid transmission is airborne, while the risk of surface transmission is very low (just a 1 in 10,000 probability, according to the Centers for Disease Control). However, many NHS Trusts struggle to meet the NHS’s own ventilation guidelines of 6 air changes per hour in wards. This so-called ‘structural under-ventilation’ is mainly due to inadequate existing ventilation systems in older hospitals and prohibitive retrofit costs, not to mention the disruption that a new HVAC installation would entail.

Hospitals and Healthcare

Portable HEPA filter air purifiers to protect patients and staff

Rensair’s portable, hospital grade HEPA filter air purifiers can be a quick fix, supplementing existing integrated ventilation systems to eradicate air contaminants. High performance (min 99.97% efficacy), cost-effective (fraction of the cost of a new HVAC system) , multi-tasking (viruses, bacteria, allergens), and instant to instal (simply plug and play).

The WHO recommends air purifiers to supplement integrated ventilation systems while the UK SAGE committee, in its November 2020 report on air cleaning devices to combat SARS-CoV-2 transmission, recommends two air purifier technologies: fibrous HEPA filter and germicidal UVC light. This is supported by a new report on infection resilient environments,  commissioned by the UK government’s Chief Scientific Adviser and published by the Royal Academy of Engineering.

Rensair’s medical grade air purifiers use a patented combination of HEPA filtration and UVC – supported by a powerful fan – to both trap and destroy viruses, rendering the HEPA filter totally safe for easy maintenance.

Rensair traps and destroys more than 99.97% of airborne particles

RNA & DNA Viruses

throughout nature

Bacterial Spores

poiled foods, kitchens, bathrooms


windows, doors, carpets

Mold Spores

moist places, bathrooms, inside pillows, humidifier


Ceiling tiles, incubators, faulty HVAC


diesel and petrol emissions

Dust Mite Allergens

furniture, carpets

Pet Dander

pets, floors, carpets


skin, mucous membranes, soil


burnt food, garbage, tobacco, cleaning products

Tobacco smoke

cigarettes, formaldehyde


skin, hair, soil, plastic, clothing

Hospitals and Healthcare

The preferred hospital grade air purifier for NHS Trusts

Originally developed to meet the strict requirements of Scandinavian hospitals, Rensair’s medical grade air purifiers are fast becoming the preferred choice for the NHS, a breath of fresh air boosting indoor air quality throughout, from wards to operating theatres.

Rensair has worked closely with NHS Estates teams and NHS Infection Prevention and Control teams at various Trust hospitals on their implementation of our products. This has led to reopening of poorly ventilated closed wards, reduced fallow times between appointments and increased patient throughput in many departments

One Trust was quoted £140,000 per ward to increase the airflow of their existing HVAC system to meet the official guidelines. They decided that buying Rensair’s portable  air purifiers was both a significantly cheaper, less disruptive and technically superior air quality solution.

Rensair is the only air purification company to be an Associate Member of the NHS Confederation, supporting their aim by providing education and expertise on air purification to combat airborne viruses and bacteria. As a result, we hope to improve infection control standards across the NHS and facilitate a return to full capacity, tackling the backlog caused by the pandemic.

Hospitals and Healthcare

Air purifier validation tests

Rensair’s air purifiers are independently validated by scientific research laboratories, including Eurofins, Norconsult, and Oslo University Hospital.

In a test by the Danish Technological Institute to determine Rensair’s performance in reducing the concentration of MS2 bioaerosols as a proxy for SARS-CoV-2,  a particle reduction rate of 99.98% was recorded in 15 minutes and above 99.99% in 30 minutes. Furthermore, a second test reported 100% elimination of virus particles on the filter, with zero traces detected.

Hospitals and Healthcare

Newsweek recognition for smart air purifier

Rensair’s medical grade air purifier has also been included in Newsweek’s list of Best Infection Prevention Products 2021, judged by the Leapfrog Group on: effectiveness; safety; successful real-world implementation; the quality of research studies demonstrating the product’s effectiveness; and the stability of the company (to support future implementations).

“We’ve been very impressed by the professionalism of Rensair and the spec of their product. Staff at the Jericho Health Centre, Oxford, really appreciate the extra protection from the air purifiers. Patients will of course benefit from hospital-grade clean air in the waiting room.”
— Dr Paul Ch’en
“While the HEPA technology and air circulation succeed in trapping virtually 100% of pathogens, the UVC ensures that anyone replacing the filter will not come into contact with hazardous live pathogens. We have a team of health experts second to none, so Rensair fits right in.”
— Dr Veronica A McBurnie Founder & Clinical Director

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Hospitals and Healthcare

Clean air is the NHS’s most powerful weapon against Covid

The impact of Covid on the NHS has been devastating and it has now been reported that it could take up to five years to clear the backlog. People are calling for a bold, transformative approach to resolve this crippling issue. Clearly,  a raft of measures is needed, both financial and operational. If the health sector is to live long term with Covid, it needs to cover all the bases: not just the complex issues like human resources and capacity increases, but simpler issues too – like hospital grade air purifiers to remove air contaminants and improve indoor air quality… more

Hospitals and Healthcare

Ground attack alone will not defeat drug-resistant bacteria

Of course, Covid is not the only threat that can be quelled with clean air. We can predict what will happen with drug-resistant bacteria and we know that it requires a multi-faceted defence system that includes air purifiers to deliver clean air.

Norovirus is a case in point. With particles approximately 27-38 microns in diameter, which are easily trapped by HEPA filters, it is known to spread in aerosol droplets that are created when infected children or adults vomit and/or have diarrhea. Despite that knowledge, preventative measures still focus on fomite cleaning and hand washing, even though, globally, norovirus results in a total of $4.2 billion in direct health system costs and $60.3 billion in societal costs per year… more

Case studies and articles

Read more >

Update to dentist’s fallow time guidance (UK)

While lockdowns have been lifted, fallow time – the amount of time an operatory is left empty after an Aerosol Generating Procedure (AGP) to permit the clearance and/or setting of airborne droplets or aerosols – is still contributing to … more

Rensair protects patients in rheumatology practice

Dr. Christoph Czerwenka, a well-known rheumatologist from Salzburg, Austria, has chosen Rensair air purifiers for his practice specialising in rheumatological autoimmune diseases and internal diseases. The Rensair devices protect patients and staff in the waiting room, as well as in … more

Rensair joins the team of experts at Westbourne Medical Studios

Based in the heart of Glasgow, Scotland, Westbourne Medical Studios is a private GP clinic focused on integrative medicine. The clinic – featured in Tatler’s UK Top 20 private GPs – adopts a 360o approach to patient care that is … more
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  • Questions

  • Are air purifiers used by the NHS?

    Rensair air purifiers are widely used by the NHS to close the gap between the required air change rate to protect health and that delivered by hospital HVAC systems.

  • Is a medical grade air purifier subject to medical device regulation?

    Hospital grade air purifiers are not classified as medical devices and are therefore not subject to regulation.

Get clean air for your healthcare facility

The Rensair air purifier technology removes 99.97% of airborne viruses, bacteria and other pollutants

Rensair’s Core hospital-grade air purifier is a heavy-duty yet portable device suited to a wide range of shared spaces, from hospitals and nursing homes to offices and hospitality venues. Learn more
Removal: Particulates
Airflow: 330 CFM
Dimensions: H: 30.3in, Ø: 14.5in
Application: Hospitals, care homes, offices, schools, clinics, gyms, hospitality, retail
Net weight: 40 lbs
Noise: 45dBA (low setting)
Connectivity: Analogue
The Compact portable air purifier is a versatile and very quiet device that’s ideal for smaller indoor spaces. It’s powerful and smart, with 5 airflow speeds, and WiFi connectivity. Learn more
Removal: Particulates
Airflow: 270 CFM
Dimensions: H: 25.6in, Ø: 11.8in
Application: SMEs, conference rooms, homes, doctor & dental surgeries
Net weight: 21 lbs
Noise: 32dBA (quiet setting)
Connectivity: WiFi (upgradeable to full IoT)
The AirBubbl provides purified air for vehicle occupants and personal spaces. It delivers 22 cubic feet of clean air every hour and removes 99% of particulate matter and noxious gases. Learn more
Removal: Particulates & gases/VOCs
Airflow: 22 CFM
Dimensions: H: 12.2in, Ø: 4.7in
Application: Cars, taxis, vans, truck & bus cabs, personal spaces
Net weight: 1.8 lbs
Noise: 44dBA (normal mode)
Connectivity: Bluetooth
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