Portable office air purifier

Rensair is a specialist in air purification, protecting and enhancing lives through clean air. Our patented 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.

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


Virtual working is not healthy for business

For companies to thrive, they need physical interaction. Not just talking, but meeting. Personal contact and face-to-face brainstorming stimulate new ideas and champion corporate culture. That’s why most organizations want their staff back in the office, at least on a part time basis.

But some employees are reluctant to return. Anxiety about Covid persists and people have got used to WFH. If companies are to entice employees back, infection control and employee health need to be top of the management agenda.


Air quality has never been more important

As the world emerges from lockdown and people start to gather again in indoor spaces, the threat of airborne transmission escalates.The World Health Organization (WHO) now advises that Covid-19 is mainly spread through the air. The CDC also warns that the Delta variant causes more infections and spreads faster than earlier forms of the virus that causes Covid-19.

There is also evidence to suggest that, after a protracted period of social distancing and mask wearing, people have weaker immune systems to defend themselves against the onslaught of respiratory viruses like flu and the common cold, as well as Covid-19 and its variants.

Businesses are rightly concerned about protecting their employees, customers and other stakeholders. As a by-product of that protection, they also want to reduce absenteeism and increase productivity, two further advantages of good indoor air quality:

  • In the USA, airborne contaminants result in $150 billion of illness-related costs per year. Of that, $93 billion represents lost productivity from headaches, fatigue, and irritation associated with sick building syndrome (National Oceanic and Atmospheric Administration).
  • A study quoted by the World Green Building Council suggested that enhancing the quality of the air in an office environment could be as effective in reducing transmission of airborne viruses as vaccinating 50-60% of the population.


An office air purifier can close the air change gap

However, many buildings struggle to achieve the WHO’s recommended air change rate of 10 litres per second per person. It is often an unrealistic expectation, especially in conference rooms with high occupancy levels and back to back meetings.

That’s where portable air purifiers come in to close the gap. But. of course, not all air purifiers are the same.

The CDC recommends portable HEPA filtration units that combine High Efficiency Particulate Air (HEPA) filters with high fan speeds as a preferred option for auxiliary air cleaning. Ultraviolet germicidal irradiation is also cited as a supplemental treatment to inactivate SARS-CoV-2. Other authorities such as the WHO, SAGE and EPA also stipulate that, in the absence of effective mechanical or natural (outdoor air) ventilation, a good air purifier should be based on HEPA and UVC technologies. HEPA filter air purifiers can either work in isolation (single or multiple units) or they can supplement an in-built Heating, Ventilation and Air Conditioning (HVAC) system to eliminate airborne impurities and improve office air standards.


Pure air boosts brain power

A major new study from Harvard University shows that there is a direct relationship between the amount of ultra fine particles in the air and how people perform in mental tests. The more polluted the air, the worse people perform. Read more..

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

5 top tips when considering an air purifier.

“We now have 12 Rensair units across our two sales floors. They work to complement the building’s already fully functional air flow system. Our dedicated COVID Marshall manages their general upkeep, checks to make sure they are operating every day and cleans the filters.”
— Paul Barrett Operations Director
“I am very happy with Rensair and so far all is working well.”
— Jodie Nixon Health and Safety Manager

Customer case studies

Read more >

Rensair and The Tailoring Academy are cut from the same cloth

The Tailoring Academy, an independent training provider in Macclesfield (Cheshire, UK), is using Rensair air purification to help continue face to face teaching during the pandemic. … more

Northern Gas and Power uses Rensair air purifiers as it supports clients

When the pandemic hit, many companies including Northern Gas and Power (NGP), the leading energy consultancy in the UK, faced new challenges. … more

Rensair Helps Global Telemetrics Serve Their Clients Without Interruption

When two global, high-tech companies decide to work together, the union sizzles with success. Such is the case with Rensair and Global Telemetrics. … more

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What about the cost of purified air?

When it comes to capital cost, a portable HEPA filter air purifier (or multiple devices) tends to be a fraction of the cost of in-built Heating, Ventilation and Air Conditioning (HVAC) systems. A portable air purifier typically has similar energy consumption to a fridge freezer and costs just a few cents a day to run.

With an air purifier using a HEPA type filter, further substantial savings can be made on energy (and associated carbon emissions) from not having to heat or cool fresh air intake. The ongoing savings from the right air purifier can quickly offset the initial capital investment in purified air.

Articles on clean office air

Read more >

Should clean air be considered a basic employment right?

Many people are saying that the future of work will be different, with employees requesting more of a balance between office and home working. … more

Removing air pollution without adding noise pollution

Removing indoor air pollution has proven benefits. Not just the obvious advantages of protecting your health from bacteria, viruses and allergens, while minimising sick building syndrome. … more

It’s time to treat clean air as an intangible asset

The UK economy is suffering at the hands of Coronavirus. To recover from the protracted lockdown, we must embark upon large-scale reopening of business. … more

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  • Questions

  • What do HEPA air purifiers remove?

    Most indoor air pollution including viruses, bacteria, fungi, mold spores, smoke particles, pet dander, dust mites, allergens, pollen, ultra fine dust particles, and odours.

  • How much noise does an air purifier make?

    On the lowest setting, the Rensair unit’s noise level is just 45dBA, an even white noise, equivalent to the recommended white noise level limit for an infant sleep machine. On a Sound Pressure Level (SPL) metre, it sits between ‘whisper quiet’ and ’quiet home’.

Get clean air for your business

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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