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Guide | September 15, 2023

How to choose a Dyson Air Purifier for your home

Different indoor environments have unique air filtration needs. The function of each space – whether it be cooking, working, cleaning or sleeping can affect which particles and pollutants are present. It’s also important that the purifiers filtration settings are optimal for the physical dimensions, preferred temperature, and sound levels of the environment.

Monika Stuczen, Dyson Microbiologist explains the potential impacts of pollution on wellbeing. “Just because it is out of sight does not mean it should be out of mind. Microscopic dust particles like pet dander and dust mite allergens may impact your wellbeing.”


Effectively purifying the air for your space is intrinsic to the health and wellbeing of anyone around. With the shift for many to spend more time at home, superior air quality is essential. To understand what the best air purifier for your space is, we analyse everyday household sources that emit various pollutants. Compare Dyson technology and see which air purifier suits your home or environment needs best below.

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How does an air purifier work?

Air purifiers are designed to sense, capture and trap unwanted airborne particles from a room – acting as our best defence against pollutants. Once pollutants are detected, clean and purified air is then projected back into the room. To ensure air quality at home is improved, this filtration process occurs throughout the day while the air purifier is in use. This can impact the air we breathe and support the health of those in the home.

Types of pollutants in the home

Dyson’s research into air science reveals the range of indoor and outdoor pollutants that can make their way into the home. Some surprising sources of pollutants include:

  • Cleaning products
  • Home materials like paints and furniture materials
  • Indoor cooking fumes
  • Wood Heater & candles
  • Cosmetics like lotions, nail polish and aerosols

  • Outdoor pollutants can also access homes through open windows and doors. Types of outdoor pollutants can include:
  • Vehicle exhaust fumes & brake dust
  • Pollen allergens
  • Gardening products

  • To effectively trap and remove these pollutants, Dyson’s latest technology are sealed to HEPA 13 standard1 to prevent pollutants from being expelled back into the room after they've been removed from the airflow.

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    What to look for in an air purifier

    As with our vacuum technology, Dyson purifier filtration capability is achieved through the combination of airflow technology and filtration. Conventional air purifiers often only draw in and project a limited amount of air within each space. A Dyson air purifier projects clean air around the whole room2 using Air Multiplier™ technology.

    Other features include:

    HEPA filtration: HEPA, which stands for High Efficiency Particulate Air, is a standard of filter efficiency. To meet HEPA criteria, our machines remove a minimum of 99.95% of particles as small as 0.1 microns3 and is sealed to HEPA H13 standard1. So what goes inside, stays inside.

    Gaseous filtration: Aside from particle matter, indoor spaces in the home and office can generate potentially harmful gaseous pollution. Indoor sources can include VOCs released by household products such as cleaning sprays. Outdoor sources can include pollutants such as NO₂ from vehicle emissions and fumes, which can be brought in through open windows and doors. The Dyson air purifier range can help to create cleaner air through the use of an activated carbon filter, which captures gases4.

    Noise: Advancements in technology means our range is now acoustically engineered to reduce turbulence, making our machines 20% quieter than previous models7. Night mode monitors and purifies the air continuously with the quietest settings, alongside a dimmed display.

    How to choose the best air purifier for you

    When looking for your ideal air purifier, it’s important to consider all variables of your home before making a decision.

    • Allergies

      A core reason to buy an air purifier is to capture allergens. Airborne allergens such as pollen, animal dander and dust should be detected and destroyed to improve air quality. It’s important to understand which allergens a purifier can filter. Air purifiers with a HEPA filter are recommended, as they expose and remove everyday allergens, giving you the clarity and comfort of breathing cleaner air.

    • Room size

      When looking for an air purifier for the home, it’s important to consider room size. Depending on space, you will need to determine whether a large or small size air purifier is required. If your air purifier will be placed in a bedroom or office, opt for a small to medium sized machine. If it will be occupying a larger space such as a spacious living room or open plan environment, then a larger purifier will be required to productively filter the entire area.

    • Filtration frequency

      Effective results derive from an air purifier being frequently in use. If you plan to run your purifier throughout the day, it should meet the noise requirements of differing parts of the day. When sleeping, an air purifier that can adjust to a speed that’s below 30 decibels will not effect sleep. If you’re looking for a bedroom specific air purifier, ensure it can be switched to night mode.

    • Consider heating, cooling and humidity

      Modern developments in air purification offer more than just clean air. A range of purifiers now provide heating, cooling and humidifying capabilities to better suit the needs of a space. Determine whether you simply want air filtration or additional temperature benefits as well.

    • Smoke

      If anyone smokes in your home, consider choosing a machine that purifies smoke. Similar to allergens, smoke can also be eliminated from the air. Some purifiers will contain a charcoal or active carbon filter to support smoke removal and provide cleaner air.

    • App connection

      Many manufacturers will deliver apps their air purifiers can connect to. Such apps allow you to adjust the settings of your smart machine using a smart device. Apps like MyDyson™ can also prepare and present air quality reports and will notify you if your purifier requires a new filter or maintenance.

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    Which air purfier is best for your home?

    Now that you know what to look for in an air purifier, view the difference in Dyson purifier technology below or use our handy tool.

    Dyson Purifier Hot+Cool™ Formaldehyde

    Including all features like total temperature control and smart-home enabling, this Dyson purifier that also contains a catalytic filter that destroys formaldehyde5. Alex Knox, Vice President of Environmental Care at Dyson explains, “the off-gassing tendency of formaldehyde means that it can go undetected in a home for years. Dyson has engineered a machine that provides accurate and successful sensing, capture and destruction of the pollutant. Our solid state sensor doesn’t dry out overtime, lasting the lifetime of the machine”

    • Filtration technology:

      Three stages of filtration traps pollutants that were previously undetectable. A HEPA+Carbon filter removes odours and gases such as nitrogen dioxide4, and 99.95% of particles such as dust mites and pollen as small as 0.1 microns3. Formaldehyde, a harmful pollutant which can continuously affect air quality, is captured and converted to CO2.

    • Heating and cooling technology

      Dyson engineers utilised Air Multiplier technology to heat and cool rooms evenly. Once the target temperature is reached, heating automatically stops. To cool the room quickly, over 290 litres of air a second are projected. The diffused mode can be used to filter air quality only.

    Dyson Purifier Hot+Cool™

    Dyson’s all-round temperature control purifier with both heating and cooling capability. Available in two models – including Black/Nickel and White/Silver. Temperature regulation is an important factor in sleep. The body’s thermoregulation process works to maintain ideal temperatures, but room temperature can imbalance this. Dyson Hot+Cool™ includes a Night mode function – which monitors, purifies and regulates air quality and temperature on the quietest setting and a dimmed display.

    • Filtration technology:

      Two-stage filtration captures odours, VOCs, pollutants and particles. The HEPA H13 standard1 filter removes 99.95% of particles as small as 0.1 microns3. It isn’t only the filter which is sealed to such high standards but the whole machine, to ensure pollutants remain captured.

    • Heating and cooling technology

      Fast and even heating can be achieved across the entire room. Once the target temperature is reached, heating automatically stops. To cool the room quickly, over 290 litres of air a second are projected. The diffused mode can be used to filter air quality only.

    Dyson Purifier Cool™

    Dyson’s purifying fan that captures harmful dust and allergens whilst projecting cooled air throughout the room. For home builds without immediate ventilation, Dyson Purifier Cool™ projects a cool flow of air, to improve comfort as you spend time indoors.

    • Filtration technology:

      Two-stage filtration captures odours, VOCs, pollutants and particles. The HEPA H13 standard1 filter removes 99.95% of particles as small as 0.1 microns3. It isn’t just the filter which is sealed to such high standards but the whole machine.

    • Cooling technology

      Alongside air filtration, does the Dyson fan actually cool the air? Increased heat affects indoor air quality. During summer, cool air temperature is required for air safety alongside comfortability. Each Dyson air purifier powerfully projects conditioned air for even room cooling.

    Dyson Purifier Cool™ Formaldehyde

    Dyson’s purifying fan with advanced formaldehyde capturing filtration. Only Dyson-designed fans utilise Air Multiplier technology – which draws in and traps distant pollutants, and projects purified back out2.

    • Filtration technology:

      Three stages of filtration are included in this Dyson fan purifier. A HEPA+Carbon filter removes odours and gases such as nitrogen dioxide4, and 99.95% of particles such as dust mites and pollen as small as 0.1 microns3. Formaldehyde, a potentially harmful pollutant which can off-gas within the home, is captured and converted into tiny amounts of water and CO2.

    • Cooling technology

      A powerful stream of purified airflow works to cool down interior spaces. The cooling effect results from air being projected from the amplifier at velocity. The higher the fan speed, the more powerful the airflow, and cooler the air will feel.

    Dyson Big+Quiet™ Formaldehyde

    Dyson’s quietest, most powerful air purifier to date, designed for large spaces. Dyson Big+Quiet™ Formaldehyde uses cone aerodynamics to project and circulate air through the entire room – quietly. Allergens and 99.95% of ultrafine particles are captured4 for thorough air purification.

    • Filtration technology

      Lifetime solid-state formaldehyde sensor powerfully detects pollutants throughout the room, cross-checking every second and displaying live results in the MyDyson™ app. Formaldehyde molecules are permanently broken down into water and CO21 while the HEPA H13 grade filter captures 99.95% of ultrafine particles4.The three-phase purification system is housed within our HEPA H13 grade8 machine and fully-sealed so you can rest assured that what goes inside, stays inside.

    • Exclusive Satin Dark Blue/Gold edition

      Our advanced edition comes with additional CO2 sensor and absorbs 3x more nitrogen dioxide (NO2).1 One of the most common pollutants in the home, NO2 is emitted by gas appliances, open flames and wood burning stoves. Only available at Dyson.

    Explore our cleaning checklist for neglected areas in the home next.

    1. Particle 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%
    2. Tested for air projection, purification coverage in a 81m3 room and heating performance in a 35m3 room.
    3. Tested for filtration efficiency at 0.1 microns (EN1822, ISO29463).
    4. Gas capture rates may vary.
    5. Third party full machine testing based on GB/T 18801-2015 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
    6. App functionality may vary per market. Requires Wi-Fi and app enabled device. Standard data and messaging rates may apply. Requires iOS version 10 or above, or Android version 5 or above. Your mobile device must have Bluetooth 4.0 support.Refer to the MyDyson app for compatible smart home devices and voice services .
    7. Compared to Dyson Pure Cool™ TP04