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Radic8 vs. Dyson vs. Molekule vs. Camfil Air Purifiers: An honest comparison July 9, 2020



Radic8 Dyson Molekule Camfil Air Purifier comparison


Considering an air purifier?

We’re here to help.

Even though we supply Radic8 air purifiers, my goal is for you to walk away with the best solution for you, and part of that is providing you with information on all air purifiers, not just the ones we sell.

Come on a journey with me to discover the air purifier that’s best for you.


Here are the four air purifier brands we will compare:






We will delve into how the four most trusted brands in air purification compare in the following areas:
  • Efficacy on airborne pollutants
  • Capacity
  • Cost (initial and lifetime)
  • Ease of use
  • Testing/Certification


Radic8 Dyson Molekule Camfil qualities


Efficacy on airborne pollutants



The Viruskiller technology is a combination of filtration and sterilisation.

  • pre-filter
  • activated carbon filter
  • HEPA 13 filter
Sterilisation: Photocatalytic Oxidation

Viruskiller has test results showing a 99.9999% kill rate of the following pollutants in a single air pass: 

  • viruses
  • bacteria
  • pollen
  • formaldehyde
  • mould
  • nitrogen dioxide
  • toluene
  • VOCs
  • allergens
  • exhaust fumes
  • spores
  • particulate matter
  • fungi
  • fine dust
  • odours
  • toxic gases. 



Dysons CryptomicTM technology again uses HEPA filtration (H-13 Glass HEPA) and activated carbon. The chamber also includes a catalytic coating similar to the Cryptomelane mineral, which reacts with active oxygen molecules to destroy formaldehyde.

Dyson state their air purifier captures gases and 99.95% of fine particles, such as allergens and pollutants, and are particularly effective against formaldehyde.



Unlike Radic8 and Dyson technology, Molekule opts for a single pre-filter to capture the large particles, and then utilises its patented PECO (Photo Electrochemical Oxidation) to neutralise pollutants. This technology neutralises 99.9999% of virus, mould spores, bacteria, pollen, toxic fumes, and other air pollutants.



Camfil’s City Range air purifier involves a three-stage filtration process, but no sterilisation process like the others. This purifier starts with a pre-filter, followed by Camfil’s Absolute HEPATM (H13 filters) and finally a VOC/Molecular filter. This process is designed to remove particulate matter as small as PM1 (1micron) from the air and is certified to remove 100% of pollutants at 0.06 micrometres.

Note: Camfil have a lack of public data on the efficacy of their filters against bacteria, fungi, virus and specific VOC’s.


Radic8 Dyson Molekule Camfil efficacy


Conclusion: Radic8 and Molekule [TIE]

Dyson, Molekule and Radic8’s purification/sterilisation technologies are highly advanced, and as the table shows there is not a lot of difference in what they can remove from the air. However, Radic8 and Molekule have to win this round, as their efficacy on all air pollutants is a greater than 4 log reduction (99.99%) as opposed to:

  • Dyson’s specific focus on destroying formaldehyde, and lack of testing on virus efficacy, and
  • Camfil’s lack of sterilisation abilities.

Note: Each of the technologies have had testing against different versions of the pollutants (i.e. different virus strains) and therefore this comparison is generic in some respects, as it requires strict parallel testing to allow more absolute statements.




This is based on:
  • coverage (m2) and
  • airflow (CFM – Cubic Feet per Minute)



  • Radic8’s smallest unit, Hextio, can cover rooms up to 20m2, with airflow of 12- 20 CFM.
  • Their medium unit, VK401, can cover rooms up to 60m2, with airflow of 70- 141 CFM.
  • Their larger units, VK103 and VK102, can cover rooms up to 100m2 and 165m2, with airflow of 200- 358 CFM and 200- 388 CFM
  • The largest unit, VK Medi , can cover large rooms up to 165m2, with airflow of 300- 635 CFM.



  • Dysons Pure Cool Cryptomic unit has a max airflow of 65 CFM.
  • Dysons Pure Hot + Cool Cyrptomic unit has a max airflow of 65 CFM.

Note: No coverage area is shared by Dyson for these units. However, they were ‘tested for filtration efficiency (EN1822) and whole room coverage (TM-003711 & DTM801) in a 27m2 room.’ 1



  • Molekules’ smallest unit, Air Mini, can cover rooms up to 22m2.
  • Their medium unit, Air, can cover rooms up to 55.74m2.
  • Their largest unit, Air Pro RX, is for rooms larger than 74m2, with airflow of 300-800 CFM.

Note: No airflow data is shared for the Air or Air Mini units.



  • Camfil’s smaller City S has an average air purification area is 45m2. with a CADR (clean air delivery rate) ranging from 33- 145.38 CFM.
  • Their larger unit, City M, has an average air purification area of 75m2, with a CADR ranging from 78- 254.85 CFM.


Conclusion: Radic8

What all those number actually mean is that Radic8’s range of units have the ability to cover the greatest area with suitable airflow. Comparing each brand’s largest unit, Radic8’s can cover the greatest area (up to 165m2) with a similar airflow to Dyson and only 200CFM/5m3 less than Molekules’ Air Pro RX. Radic8’s airflow is slightly lower compared to Dyson and Molekule on the smaller units, but they still have greater area coverage overall.


Cost (All prices are NZD)


Radic8 Dyson Molekule Camfil cost projection



The VK401 unit costs $3,163.14 to purchase initially. Being available in NZ means standard freight costs will be incurred.

Ongoing the maintenance required is the replacement of the HEPA filters approximately every 12 months (depending on the room conditions) and the sterilisation chamber every 8000 hours (2-3 years).

Over 5 years the VK401 is estimated to cost around $4,300.



Dyson’s Pure Cool Cryptomic™ costs $1,005.96 2 initially. This model is not currently available in NZ meaning additional international freight charges will be incurred.

The ongoing maintenance required is the replacement of the HEPA and Activated carbon filter every 12 months.

Over 5 years Dysons’s Pure Cool Cryptomic™ is estimated to cost around $1,600 + international freight cost.



The Air unit costs $1236.58 to purchase initially. Like Dyson’s Pure Cool Cryptomic™, this model is not currently available in NZ meaning additional international freight charges will be incurred.

The ongoing maintenance required is the replacement of the pre-filter every 3 months and the PECO filter every 6 months – these are automatically shipped out at these intervals.

Over 5 years Molekules Air unit is estimated to cost $3,200 + international freight cost.



The City M model costs $2,747.14 initially. Being available in NZ means standard freight costs will be incurred.

The ongoing maintenance required is the replacement of the VOC filters annually and the HEPA filters approximately every 18 months. 3

Over 5 years the City Touch is estimated to cost around $3,613.80.


Conclusion: Dyson

I have chosen a unit from each brand with similar capacities and compared the initial and ongoing costs. Dyson’s Pure Cool Cryptomic™ model is the cheapest option upfront and to maintain.  However, it is shipped from USA so will incur additional freight charges which potentially could blow out the cost.

Camfil’s City M is the least expensive option available in NZ, as it does not have the issue of international shipping, but Dyson Pure Cool Cryptomic™ is still approximately $2,000 cheaper (before shipping) so is expected to be least expensive over the 5-year period.


Ease of use



The Viruskiller units have a digital display screen which displays:

  • UV lamp time
  • current temp
  • fan speed
  • error messages, and
  • alerts when the filters and sterilisation chambers need to be replaced.

Radic8’s units are equipped with remote control, which can be used to:

  • turn the unit on/off
  • change fan speed
  • turn LED lighting on/off
  • change mode/display information, and
  • set the timer.

Radic8’s technology (Hextio, VK002 / 102 / 103 series) is automated (manual adjustment optional) with an inbuilt IAQ sensor monitoring particulate matter and VOC’s/gases. This automatically adjusts the airspeed as required.  For example, it will go into turbo mode when it senses high levels of pollutants and remain at this speed until the levels are reduced.

Each model has slightly different displays:

  • Hextio has LED lighting around the logo
    • Blue – automatic mode: indicates good air quality and normal fan speed of 20%.
    • Red – automatic mode: indicates poor air quality and high fan speed of 100%.
    • Green – manual mode: fan power can be set to 3 speeds
      1. low 20%
      2. medium 50% or
      3. high 100%
    • VK103 and VK102 have individual LED displays for dust and VOC’s on the front. Colour indicates air quality:
      • blue – good
      • yellow – normal
      • red – poor

Radic8 does not currently have an app integration. However, all the units can be controlled with a Wi-Fi plug to operate remotely and controlled by Building Management Software.



Dysons air purifiers have a digital display on the front of the unit, where you can scroll through the following information:

  • IAQ graph (last 12 seconds of data)
  • indoor temperature
  • particulate matter (PM2.5 and PM10) presence
  • VOC’s in the air
  • indoor humidity
  • remaining filter life, and
  • Wi-Fi Connection.

Dyson’s air purifiers come with a remote control that have the following features:

  • on/off
  • information menu (to scroll through the info on the digital display)
  • auto mode
  • airflow speed
  • manual oscillation
  • night mode/sleep timer.

Dysons technology ‘automatically detects airborne particles and gases, then diagnoses and reports them in real time.’ 4 The inbuilt sensors adjust the airflow speed according to the air quality detected, and will increase until the target air quality and temperature are reached.

Dyson have the ‘Dyson Link’ app which allows you to monitor your air quality, see the information menu and adjust the settings (i.e. oscillation) from your mobile. This can be linked with Amazon Alexa to enable voice control.



Molekule’s units have a touchscreen display which lets you select fan speed, modes and see the status of the filters.

Only one of Molekules models currently has automated air quality sensors and air speed adjustments. The Air Mini+ has ‘Auto Protect’ mode which auto-adjusts fan speed based on the inbuilt IAQ sensor.

Molekule does have an integrated app which allows you to see filters status or select fan speed right from your phone. It is compatible with iOS and Android. The Air Mini+ model also shows the current particles levels in the air (from ‘good’ to ‘very bad’).

One additional thing Molekule gets credit for is their ‘filter auto-refills’ 5. They automatically ship filters to users as they require them, taking away the of monitoring and reordering each time a filter or sterilisation chamber reaches the end of its life. For $200/year, you receive 2 PECO filters and 4 Pre-filters.



Camfil’s City range has a display where the desired airflow can be set, and the filter change indicator.

Camfil have their patented ‘Air Image Sensors’ which are air quality monitors that can sync with their air cleaners, to automatically adjust the airspeed to control the air quality. These monitor particulate matter (PM1 and PM2.5) and have a quick online reporting tool. The units can also be set on a timer.


Conclusion: Radic8, Dyson and Molekule TIE

Radic8, Dyson and Molekule have to take a joint crown on this one. Molekule and Dyson both getting points for their app integration and Molekule getting additional credit for automated filter-refills. Dyson, however, have the most advanced app and monitoring system, as well as providing a remote with the units for ease of use. Radic8’s ability to integrate with Building Management Systems brings them up to the others in this area, despite the lack of an integrated app. Camfil does have a good syncing air quality sensor and online reporting tool, but this is not included in the product package – requiring additional investment.





Radic8 claims to be the ‘Highest Certified Clean Air Technology in the world’6. The reason they stake this claim is because of the extensive research and independent laboratory testing this technology has undergone over the past 16 years.

‘The first virus killing tests arrived in 2004, showing a 99.9999% kill rate on Corona Virus, Adeno Virus, Influenza Virus and Polio Virus’7 from testing executed by Microbiology Classroom at the Medical Science Research Institute Medical College of The Kangwon National University. Radic8 welcome enquiries on their test results and are happy to share full test reports on request.

All of Radic8’s test results are from a single air pass. This means 99.9999% of virus, bacteria, mould, and all other air pollutants is removed from the air in a single air pass through the machine – not over a period of time.

Certifications and approvals:
  • CE-approved
  • CSA approved
  • FCC
  • ISO (9001:2015)
  • UL certification
  • certified Ozone Free.



What testing has been done?

Dyson has had numerous internal and independent, third party tests of its Cryptomic™ purification technology.

Filtration Efficiency

Dyson has undergone independent testing to the industry standard (EN1822) for particle capture.

Whole room coverage

Dyson has also been internally tested for air projection and purification coverage in a 27m2 room to Dysons internal methods – DTM801 and TM-003711, respectively.

Removal of Gaseous substances

Their formaldehyde and benzene destruction claims are based on third party full machine testing to Chinese ‘Air Cleaner’ standard – GB/T 18801-2018.

Testing for removal of other gaseous substances has been completed to industry standard tests JEM 1467 (acetic acid, acetaldehyde, ammonia), DTM-003282 (NO2) and a Dyson internal method for VOC capture. They do mention capture rates may vary.8

JEM 1467 involves ‘single-pass’ testing methods, but no other scientific disclosure regarding this is provided by Dyson.



Molekule believes in scientific disclosure9. That’s why they make their testing and scientific data available to the public on their website. Their testing came under significant review in 2019/2020 as a result of challenges from Dyson. Any testing that was in question was conducted again by independent, third party laboratories and the results are available on their website.

Purification efficacy

Molekule’s Air Mini has been tested against RNA virus at Aerosol Research and Engineering Laboratories in a 16 m³ chamber.  Results are after 2 hours of the device being operated on its highest setting.

The technology was again tested against DNA virus at Intertek-Columbus in a 30 m³ chamber.  Results again are after 2 hours where device operated on highest setting.

It has also been tested as per Chinese ‘Air Cleaner’ standard, GB/T 18801-2015, for gaseous substance removal from the air.  This was undertaken in a 30 m³ chamber at Intertek-Grand Rapids and results after 4-8 hours where device operated on highest setting.

Filtration Efficacy

It has also been tested for filtration efficacy against smoke (0.3-1microns), Dust (1-3 microns) and Pollen (3-10 microns) as per AHAM AC-1 Protocol in a 27 m³ chamber at Intertek-Cortland. Results are after 10-22 mins where the device operated on highest setting.

Molekules Air Pro RX has been granted 510(k) Class II Medical Device Clearance by the FDA.

Molekules PECO technology has been tested for ozone emission by Intertek and the University of Minnesota Particle Calibration Laboratory, and the results show that it is Ozone Free.



Camfil’s HEPA filters have been independently certified to the EN1822 standard – certified to remove 100% of pollutants at 0.06μm (micrometres. one micrometre = 1000 nanometres).10

Their average purification area is based on AHAM certification, which involves the air purifier being able to provide five full air changes per hour in that room size.

Camfil also publish several case studies that show real life applications and testing of their City M air cleaner.

Certifications and Approvals: ECARF (European Centre for Allergy Research Foundation) certification, EN1822 certification, ISO10121 (Test method for assessing the performance of gas-phase air cleaning media and devices for general ventilation)


Conclusion: Radic8

Having test results from a single air pass puts Radic8 out in front of the other technologies in this aspect.

Dyson has been well tested to industry standards; some results are from its own internal methods.

Molekule has been under question for its testing but has had these re-conducted by independent laboratories. They lose credits here as their test results are primarily from a sealed chamber where the device is operating at its highest setting, and the reduction quantities are after a number of hours – as opposed to ‘single pass’ testing.

Camfil has quality certifications and get credit for publishing some real-life case studies and testing on their website, but again, they don’t have ‘single-pass’ test results.


Which should I choose?


You know your priorities best of anyone. What we can do is provide you with information on different aspects to consider as you determine the best fit for your business or household.

Maybe the air purifier needs to take all the pollutants out of the air, no matter the cost.

Or perhaps you would prefer a less expense over additional efficacy.

Or maybe ease of use is the highest priority in your decision making.


Molekule’s range typically suit those who:

  • Require high efficacy against all main air pollutants
  • Have an initial budget of $1500 and are prepared to spend over $3000 over 5 years.
  • Need to cover rooms around 50m2 or more, with up to 800CFM airflow.
  • Prefer remote or mobile app control of the air purifier.


Dyson’s Cryptomic™ technology typically suits those who:

  • Require filtration as small as 0.1 microns and efficacy against most airborne pollutants (except virus).
  • Have a specific issue with Formaldehyde.
  • Require a maximum airflow greater than 600CFM.
  • Have a budget of more than $1000.
  • Prefer remote or mobile app control of the air purifier


Camfil’s City range of purifiers typically suit those who:

  • Have a specific issue with allergens – ECARF certification.
  • Require filtration of pollutants including VOC’s but not virus
  • Only require less than 250CFM.
  • Have a budget of more than $2,500 and are prepared to spend over $3,500 over 5 years.
  • Are prepared to invest in an additional Air quality sensor to enable auto mode.


Radic8’s air sterilisation range suit those who:

  • Require a 99.9999% removal rate of Virus, Bacteria, Mould, ultra-fine particulate matter, and all other airborne pollutants.
  • Need to cover larger spaces – 60m2 to 165m2
  • Have a budget of $3500 or more and are prepared to spend approximately $4300 over 5 years.
  • Require BMS integration
  • Need remote control of the purifier
  • Require test results to analyse prior to investment
  • Require CE approval
  • Need a purifier that has proven efficacy in a ‘single air pass’.


Whilst Radic8 is comparatively a more expensive air purifier per unit, its ability to cover larger areas potentially means for a business needing to cover larger spaces, this would be the most cost-effective option. It also has a greater than 4 log reduction (up to 6log reduction on some pollutants) on all airborne pollutants in a single air pass.



At Presco Environmental we offer a range of Radic8 air sterilisation units.

If you think this technology might be the right option for you, we are here to answer any questions you may have.

Looking for more information on the Radic8 technology? Check out:


Note: This comparative analysis has been made to the best of our abilities based on available marketing material.


Denver Prestidge, business development manager

About the Author:

Denver Prestidge is a fresh Industrial Hygiene and Air Quality apprentice for Presco Environmental.

Focused on sourcing and developing innovative, industry leading products for New Zealand’s food producers, Denver is always looking for ways to challenge and improve the status quo.

If you would like to get in touch with Denver, feel free to reach out at any time – denver@presco.co.nz.


1 https://www.dyson.co.nz/products/air-quality/purifiers/dyson-pure-cooltm-advanced-technology/overview
2 1 USD = 1.54 NZD conversion rate as at 01/07/2020
3 BreathingSpace UK
4 Dyson Pure Cool Cryptomic™ (Gunmetal/Bronze) – Dyson
5 Molekule Air
6 An explanation of the Highest Certified Clean Air Tech: Radic8 – Radic8 Global
7 https://radic8.com/support/
Dyson.com, dyson.com.sg, Forbes.com
9 Molekule.com/papers
10 BreathingSpace UK




7 responses to “Radic8 vs. Dyson vs. Molekule vs. Camfil Air Purifiers: An honest comparison”

  1. Excellent article. I have been reading about all these but you put them all together. I appreciate you work.

    • Felicia prestidge says:

      Thank you for your feedback Chirinjeev. I’m really glad you like this article. All the best in your research.

  2. Damon forshaw says:

    Excellent read, VERY WELL THOUGHT OUT..

    • Denver Prestidge says:

      Thank you for your feedback Damon. I am really glad you enjoyed this article!
      These units reduce the amount of contamination in the air and therefore reduce the amount settling on surfaces. None of these four air purifiers actively treat the surfaces.
      There are ‘active’ air purification technologies available… Watch this space for more content on ‘active’ air purifiers in the near future!

  3. Hello Damon,
    Radic8 just released an interesting article about their efficacy in preventing surface contamination.
    The VK102 was tested by Canada-based CREM Co, and gave a greater than 99% surface contamination prevention rate after 30 minutes of exposure.

    You can read the article here: https://radic8.com/vk-102-tested-against-surface-contamination-in-canada/

    Please note: a VK102 is the same as a VK103, just with different pressure options.

  4. Ujj Nath says:

    Where are the radic 8 devices manufactured and where were they tested?

    • Saskia Prestidge says:

      Hey Uji.
      The Radic8 devices are manufactured in South Korea.
      They have undergone many different tests in different countries, including America, Canada and India.
      Hope that helps.

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