Dyson’s deep dive into air science

Dyson’s indoor air quality testing – engineered above and beyond industry standard.

Air pollution shown over city


What is air quality and why does it matter?

Air quality refers to the level of pollutants and solid particles in the air. Through an air quality tester, the types and levels of impurities in the air can be detected at any given time. When only a small amount of pollutants are present, air quality is suitable for humans. Currently New Zealand exceeds the World Health Organization (2021) guidelines by 1-2 times. Poor air quality contains high levels of pollution and can impact health.

Dyson has researched the particles we intake both indoors and out, to improve the standard of what we breathe. Our purifying technology senses air quality, allowing you to monitor and remove pollutants inside your home.

  • Indoor and outdoor air quality

    Most of us are familiar with outdoor pollution – but very few of us know that these impurities make their way into our homes. Indoor air quality testing reveals a combination of indoor and outdoor pollutants, which can actually make indoor air quality up to 5x worse.1

  • Seasonal air quality changes

    Dyson’s research into air science reveals that different seasons present different concentrations of air pollution. Increased heating in winter creates more gas pollution inside the home. Colder air also doesn’t rise like warm air, so pollutants often stick around for longer.


What is air pollution and the causes?

A mixture of solid particles and gases make up air pollution. Household cleaning products, vehicle exhaust fumes and some building materials are examples of pollutants. Dyson’s home air quality test tracks what emits air pollution, in and around the home.

  • Indoor air pollution

    Indoor air quality testing reveals that some of our most-used products are the cause of the majority of pollutants. You may be surprised to learn about the effects of daily habits – here are a few of the most common household pollutants:

    • Self-care products like nail polish, lotions and scented candles
    • Cleaning products
    • Gas stoves and other indoor cooking fumes
    • Home improvements like paint and furniture materials
    • Mould, pet allergens and dust mites

  • Outdoor air pollution

    We tend to view outdoor pollutants as separate to indoor – when really, air pollution often includes a combination of both. Outdoor pollutants make their way into homes through ventilation, on the soles of shoes and on pet hair. An air quality tester will commonly find the following pollutants indoors:

    • Exhaust fumes from vehicles
    • Pollen
    • Chemical and gas pollutants
    • Pesticides and gardening products
    • Natural sources including dust, fires and burning solid fuel such as wood


Air quality myths or facts?

Many misconceptions surround air pollution and how to deal with it in the home. Dyson’s research into air science reveals some of the common myths around air quality.

  • Myth. Air pollution is always visible

    Many of us only vacuum when we see visible dust. Particle pollutants as small as 0.1 microns can affect our health – and in some cases, trigger asthma. Bacteria, pollutants, and allergens can all be invisible to the naked eye.

  • Fact. The smaller the particle the bigger the problem

    Some purifiers leak tiny particles back into rooms, affecting the health of homes. The smaller the particle the harder to capture. Every Dyson air purifier is sealed to HEPA H13 standards2, so that they can capture 99.99% of tiny particles as small as 0.1 microns3.

  • Myth. Opening a window will increase air quality inside my home

    Outdoor pollution gains access to homes through ventilation. Exhaust fumes, pollen and gases can add to indoor pollution. An indoor air purifier is therefore your best defence against effected air quality.


How Dyson supports the conversation around air quality

We breath in up to 9000 litres of air per day, so air quality is essential to our health. To improve understanding around indoor and outdoor pollution and how it affects our health, Dyson conducted air science studies in different cities around the world.

  • Global air quality studies

    To test air quality in an average day, Dyson developed backpacks which could measure levels of pollution. From barbeques, cooking indoors and trips to the beach, how our daily activities affect us were revealed. As Professor Sotiris Vardoulakis from the Australian National University (ANU) Research School of Population Health explains, “one in nine Australians suffer from respiratory health conditions such as asthma, hay fever or bronchitis. So, understanding air quality is extremely important to decrease one’s own exposure to pollution.”

  • The COVID-19 effect and findings

    Covid-driven lockdowns presented unique levels of indoor pollutants. During this time, many of us wondered ‘how can I test the air quality in my home?’. Using the same technology we use in our air purifiers, recordings in different homes around the world were taken. Alex Knox, Vice President of Environmental Care at Dyson explains, “While it has been widely reported that air quality on some cities has improved during the lockdown period, initial data insights from Dyson’s connected purifiers indicate a small but consistent increase in indoor NO2 and VOC levels in cities during lockdown.”

    Discover more about Dyson’s lockdown investigation.


The science and research behind Dyson air purifiers

Dyson’s air purifiers are subjected to relentless indoor air quality testing, to ensure they can purify every corner of the home.


  • The lab testing process

    CADR industry standards test on spaces smaller than the average living room. To ensure our purifiers provide cleaner air in realistic spaces, our air quality test called POLAR measures rooms almost three times the size of CADR standards.

  • How Dyson purifiers capture particles

    Air science reveals that particles move through space differently. Dyson’s purifiers feature different filters which are designed to capture different-sized particles. 360 HEPA filtration captures tiny particles the size of 0.1 microns3, and a carbon activated filter removes gases. You can continuously check air quality in home spaces through real-time reporting.


What to consider when buying a purifer

Multi-functional and with whole machine filtration – designed with air science in mind. See what separates Dyson from the rest, and explore the range of features.

  • HEPA filtration

    HEPA (High Efficiency Particulate Air) is a measure of filtration efficiency. All of Dyson’s purifiers are whole machine sealed to HEPA H13 standards2. This means that they can capture 99.9% of particles as small as 0.1 microns3.

  • CADR vs POLAR testing

    CADR (Clean Air Delivery Rate) testing doesn’t reflect the size of actual living spaces. While industry may use this metric, Dyson goes a step further. We created POLAR (Point Loading Auto Response), our own standard – using real-world living spaces reflective of a real sized home.

  • Capture rate

    In indoor air quality testing, some purifiers release dirty air back into the room. Dyson’s engineers research into air science allows our purifiers to capture and hold 99.95% of particles as small as PM 0.1.

Explore the range of Dyson air purifers

Compare Dyson purifier technology and find the right purifier for your home.

Choose your model

Dyson Purifier Hot+Cool™ Formaldehyde

    Purifies, heats and cools the whole room.1

    Detects and destroys formaldehyde.2

    Sealed to HEPA H13 standard.3

    Removes 99.95%4 of ultrafine particles for a cleaner, healthier home.

    Control using the MyDyson app6 and voice services.7

Complimentary replacement filter valued at $99, plus choose between a Supersonic Origin for $449 or the Dyson Zone headphones from $599 when you add to cart.
Add to cart

Dyson Purifier Hot+Cool™

Save $200

    HEPA H13 purifier, fan and heater.

    Captures gases, pollutants and allergens.

    Automatically senses and displays real time air quality.

    Connects to the MyDyson™ app. For larger spaces.

White/Silver - Selected colour Black/Nickel
Was NZ$1,099.00 NZ$899.00 Save NZ$200.00
Choose between a Supersonic Origin for $449 or the Dyson Zone headphones from $599 when you add to cart.
Add to cart

Dyson Purifier Cool™

    HEPA H13 purifier and fan.

    Captures gases, pollutants and allergens.

    Automatically senses and displays real time air quality.

    Connects to the MyDyson™ app. For larger spaces.

Get a Supersonic Origin for $449 when you add this product to cart.
Add to cart

Dyson Pure Hot+Cool Link

  • Powerful, personal cooling in summer
  • Fast, even room heating in winter
  • Purification all year round
Get a Supersonic Origin for $449 when you add this product to cart.
Add to cart
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Phone with MyDyson app showing what's inside a Dyson purifier.

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1Supported by data from the Centre for Australian Weather and Climate Research, 2009.

2Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. Tested in Max Mode at IBR US, for whole machine efficiency above 99.95%.

3Tested for filtration efficiency at 0.1 microns (EN1822, ISO29463)

4Gas capture rates may vary.