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Support for your Dyson Purifier Humidify+Cool Formaldehyde

Dyson Purifier Humidify+Cool Formaldehyde

Dyson Purifier Humidify+Cool Formaldehyde

Here you can find helpful tips, video guides, maintenance advice, your user manual and more.

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Getting started

Getting started

Watch our getting started video to help you get up and running quickly.

Do more with the Dyson Link app

The Dyson Link app lets you monitor and control your purifying humidifying fan – wherever you are.¹ If you haven't already, download the app for more features and the latest updates.

Dyson Link app rated 4.4 out of 5 (average as of November 2020)

Connecting your machine

Follow three simple steps to connect your machine to the Dyson Link app.

  • Mobile device

    Step 1

    After you've downloaded the Dyson Link app,² open it and select 'Add machine' from the menu. Then select your machine.

  • Mobile device being held close to the machine

    Step 2

    Hold your mobile device next to your machine's display. This will allow your machine to detect your device.

  • Standby button being pressed on the machine

    Step 3

    Press the Standby button on your machine to activate the pairing process. Then follow the on-screen instructions to complete connection set up.

User manual

Download the user manual for your Dyson Purifier Humidify+Cool Formaldehyde.

User manual


Using your machine

  • Watch how to use Airflow modes

    Airflow modes

    You can use either your remote control or the Dyson Link app to change airflow modes. Choose between Fan mode, Diffused mode and Breeze mode. Watch the video to learn more about each airflow mode.

  • Watch how to use the Auto modes

    Auto purify and humidify

    When both Auto modes are selected, your machine constantly monitors your air quality, automatically adjusting airflow to reach and maintain the most comfortable humidity level.

  • Watch how to use Night mode

    Night mode

    For quiet times or when sleeping, turn on Night mode using your remote control or the Dyson Link app. Your machine will then use its quietest settings, with a dimmed display.

  • Watch how to use the Sleep timer

    Sleep timer

    To turn your machine off automatically after a selected amount of time, press the Sleep timer button on your remote control or the Dyson Link app. Then select the amount of time you want your machine to run for.

Helpful tips for best performance

Using the Dyson Link app

  • App Home screen

    Set and forget

    View real-time or historic air quality data wherever you are, or set and forget with advance 7-day scheduling.

  • App controls

    Instant control

    Your primary controls are now instantly accessed on the home screen, including power, fan speed and temperature.

  • App notifications

    Important notifications

    Receive helpful reminders when it's time to run a Deep clean cycle, or change your combination filter.

  • App Help section

    Help is at hand

    Not sure what NO₂ or VOCs are? Find instant answers and learn more about air quality in our app's help section.

Understanding your LCD screen icons

The icons on the built-in LCD screen show you which pollutants are present, reporting them in real time. They also tell you about humidity and filter life, and will alert you when it's time to run a Deep clean cycle.

  • Formaldehyde (HCHO)

    Formaldehyde (HCHO)

    Displays particles of formaldehyde, a volatile gas that can emit for years from household flooring and furniture.

  • Particulate matter PM2.5

    Particulate matter PM2.5

    Your machine is sensing microscopic particles smaller than 2.5 microns, including smoke, bacteria and allergens.

  • Particulate matter PM10

    Particulate matter PM10

    Your machine is sensing particles smaller than 10 microns, including pollen, dust and pet dander.

  • Volatile Organic Compounds (VOCs)

    Volatile Organic Compounds (VOCs)

    Your machine is detecting gases released from a wide range of sources, such as aerosol sprays and air fresheners.

  • Nitrogen Dioxide (NO₂)

    Nitrogen Dioxide (NO₂)

    Your machine is detecting oxidising gases such as NO₂ released by combustion. Includes cigarette smoke, candles and car emissions.

  • Indoor temperature

    Indoor temperature

    Shows the room's temperature.

  • Relative humidity info screen

    Relative humidity info screen

    Shows the current humidity level in your room.

  • Humidification dial

    Humidification dial

    Shows the current room humidity in grey, and the target humidity level in blue.

  • Humidifying to 50% target

    Humidifying to 50% target

    Shows your machine is humidifying to reach the set 50% target.

  • Humidifying to Auto target

    Humidifying to Auto target

    Shows your machine is humidifying to reach the Auto target.

  • Humidification target met

    Humidification target met

    Shows your humidification target has been met.

  • Humidification target lower than room humidity

    Humidification target lower than room humidity

    Shows your target humidity is less than the current room humidity.

  • Filter life

    Filter life

    Shows how much filter life remains on your combination filter, so you know when to replace it.

  • Evaporator status

    Evaporator status

    Indicates how full the evaporator is with limescale, and how soon a Deep clean cycle is required.

  • Refill tank icon

    Refill tank

    Shows it's time to refill the water tank.

  • Wi-Fi icon


    Shows the current status of connection to the Wi-Fi network.

  • Indoor Air Quality Index (AQI)

    Indoor Air Quality Index (AQI)

    Shows your air quality over the last 12 seconds, or over the last 24 hours.

Understanding pollutant levels

When a pollutant causes the air quality to drop, the relevant icon will appear on your LCD screen. The coloured bar on the left of the screen will indicate how much of the pollutant is present, and will continually update as your machine purifies the air.

  • Moderate level


    When the yellow section of the coloured bar is highlighted, your machine is detecting a moderate level of the type of pollutant.

  • High level


    When the orange section of the coloured bar is highlighted, your machine is detecting a high level of the type of pollutant.

  • Very high level

    Very poor

    When the red section of the coloured bar is highlighted, your machine is detecting a very high level of the type of pollutant.

  • Extremely high level

    Extremely poor

    When the dark red section of the coloured bar is highlighted, your machine is detecting an extremely high level of the type of pollutant.

  • Severe level


    When the purple section of the coloured bar is highlighted, your machine is detecting a severe level of the type of pollutant.

  • Very low level


    When the green section of the coloured bar is highlighted, your machine is detecting a very low level of the type of pollutant.

Works with smart voice control

Control your Dyson purifier or purifier humidifier – with your voice.¹

  • Amazon Alexa

    Ask Alexa to enable the Dyson skill, to control your Dyson purifier. And set a routine that automates how your machine works with other devices in your home.

  • Google Home

    Just say “Hey Google” and you can use Google Assistant to control all your connected purifiers. Or set a routine to automate how your machine works with other devices in your home.

  • Siri Shortcuts

    Connect your Dyson machines to Siri Shortcuts and you’ll be able to control them with your voice, on your Apple device.

Some things you can say:

When you've connected your Dyson purifier to your
voice assistant, you could try saying:

"Alexa, turn on my Dyson machine"
"Hey Google, turn up the temperature"
"Hey Siri, enable Auto mode"

Maintaining your machine

The monthly Deep clean cycle removes limescale from your machine's water system. Your machine's LCD screen and the Dyson Link app will let you know when it's time. You'll need 150g of citric acid, then follow the steps in our video guide or user manual.

We recommend only using citric acid when running a Deep clean cycle. It's a safe, natural cleaning agent, and is widely available.

The cap on the water tank contains power connections. When you fill the tank or run a Deep clean cycle, make sure the cap is completely dry before refitting.

Deep clean cycle step by step

You can also run a Deep clean cycle by following the step-by-step guide below. After pressing the Deep clean cycle button on the front of your machine, start by following steps one and two.

  • Step 1
    Remove the covers and water tank

    Push the shroud release buttons to remove the shrouds. The inner door will spring open. Push the water tank release buttons, slide the tank out of your machine, and unclip the cap.

  • Step 2
    Remove the evaporator

    Remove the evaporator from your machine, place it in the water tank and refit the cap.

Follow steps three to nine - as shown on your water tank's sticker.

  • Step 3
    Preparing the cleaning solution

    Remove the cap and evaporator. Fill the water tank half-full with cold tap water. Add 150g of citric acid and agitate until dissolved. Place the evaporator back in the tank and fill to the Max level with cold water.

  • Step 4
    Secure clips and wipe excess water

    The cap contains power connections, so must be kept dry. If wet, wipe thoroughly with a dry cloth, and make sure the cap and connections are completely dry. Replace the cap and secure the cap clips.

  • Step 5
    Start the Deep clean cycle

    Slide the water tank into your machine. When prompted by the LCD screen, press the Deep clean cycle button. The cycle starts and a countdown appears.

  • Step 6
    Remove the water tank

    When the LCD screen shows the Deep clean cycle is complete, push down the water tank release buttons. Slide the water tank out of the machine and carry to the sink.

  • Step 7
    Rinse the evaporator and water tank

    Unclip the cap, remove the evaporator and rinse under a cold tap. Wipe away excess water. Rinse the water tank under a cold tap. Wipe the inside of the tank to remove any excess solution or debris.

  • Step 8
    Fill the water tank with cold water

    Refill the tank to the Max level, wipe off any excess water and replace the cap.

  • Step 9
    Reinsert the evaporator and water tank

    Make sure the cap and connections are completely dry. Push the evaporator back into your machine, close the inner door and replace the filter covers. Slide the water tank back into your machine.

How to change your filter

Find out how to monitor and replace your combination filter in our video guide.

How to replace your filter

Frequently asked questions

The most comfortable humidity level varies depending on the temperature.3 In Auto mode, your machine constantly monitors air quality, automatically adjusting airflow to reach and maintain the most comfortable humidity level.

The combination filter needs to be changed every 12 months, based on 12 hours’ use a day.

With a full tank, your machine can humidify continuously for up to 36 hours in fan mode 1.

Yes. The machine works as a purifier humidifier fan, or just a purifier fan.

This depends on the water hardness where you live. The machine prompts you to run the cycle once a month in hard water areas. It prompts you less often in softer water areas. You can select your water hardness with the Dyson Link app.¹

No. It has a sensor to detect if it’s out of water. The screen alerts you to refill your water tank when needed.

Yes, an unlimited number of app users can control a single machine. The machine will only ever choose the most recent update. For example, if more than one person was updating the scheduling, the most recent change will be the one the machine progresses with.

Your machine is engineered to purify and humidify single rooms, so you should use it where you spend the majority of your time at home. When placing the machine, make sure there's at least a few feet of clearance on all sides, so that the air can circulate effectively. Place away from radiators, draughts or air vents. Turn air conditioning off, and keep doors and windows closed during use.

If you need a quieter environment, set your machine to fan speeds 1-4, or consider selecting Night mode. Your machine will then use its quietest settings, with a dimmed display.

Increasing airflow will create a cooling effect using purified air, so you may find it beneficial to change your purifier's speed settings as the temperature changes. For personal cooling in summer, use settings 4-10. In colder periods, enable Diffused mode. It projects air through the back of the machine, to avoid unwanted cooling.

If you're concerned by the brightness of your purifier's LCD display, consider enabling Night mode using your remote control or the Dyson Link app. During operation, a small moon icon indicates that your purifier is on, but the main display turns off after 10 seconds to help avoid sleep disturbance.

If Auto mode is enabled, AUTO will be illuminated on your machine's LCD display. When purifying the air, AUTO will be in white. When the air in the room is purified, it will turn green and your purifier will remain idle until pollutant levels rise.

Your purifier humidifier fan's auto mode is designed to manage the air quality in your home without you having to operate the machine – so it's only on when it needs to be. If you or someone in your home suffer from allergies or respiratory illnesses, we particularly recommend using Auto mode.

Your purifier works most efficiently in a sealed environment – opening the windows can allow more pollutants to enter the air in your home, which means your machine will take longer to work.

Choose your model

  • HEPA H13 purifier and fan
  • Detects and destroys formaldehyde. Automatically senses and displays real-time air quality
  • Whole-room purification for larger spaces
  • Control using the Dyson Link app
¹Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply.
²Download from the App store or Google Play.
³Refer to the Dyson Link app for compatible voice services.
Google is a trademark of Google LLC.

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