Support for your Dyson Purifier Hot+Cool Formaldehyde

Dyson Purifier Hot+Cool Formaldehyde HP09

Dyson Purifier Hot+Cool Formaldehyde

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

Register your purifier

Register your purifier for instant access to how-to guides, user manuals and more. You can also receive tailored support, direct to your inbox.

Getting started

Watch how to quickly get up and running with our step-by-step video guide.

Connecting your purifier

Follow these three steps to connect your purifier to the Dyson Link app.1

  • Phone with app on screen

    Step 1


    Download the Dyson Link app to your mobile device, open and select 'Add machine' from the menu. Then select your purifier.

  • Phone held next to purifier

    Step 2


    Hold your device next to your purifier's LCD screen. This will allow your machine to detect your mobile device.

  • Pressing the Standby button

    Step 3


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

Get more from your purifier with the Dyson Link app

The Dyson Link app lets you control your air purifier – wherever you are. You can turn it on or off, adjust the settings, change modes or check air quality remotely. If you haven't already, download the app now for extra features and the latest updates.

Dyson Link app rated 4.2 out of 5 (average as of May 2020)

Voice control. All you have to do is ask.

Using your purifier is even quicker and easier with a compatible voice service like Google Assistant or Apple's Siri. You can enable the Dyson skill, or set this up via the Dyson Link app. Find out more about voice control.

  • Google Home


    Control all of your connected purifiers with Google or set a routine to automate how your machine works with other devices in your home. Just say “Hey Google” to get started.

  • Siri Shortcuts


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



Try using these voice commands:

"Alexa, ask Dyson to increase fan speed."
"OK Google, ask Dyson to start oscillating."
"Hey Siri, ask Dyson to turn on Night mode."

User manual

Download your Dyson Purifier Hot+Cool Formaldehyde user manual.

10.3MB

How to use your purifier

Understanding the LCD screen icons

The icons on your LCD screen show which pollutants are present, reporting them in real time. They also tell you about temperature, humidity and filter life.

  • Indoor Air Quality Index screen

    Indoor Air Quality Index (AQI)


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

  • Particulate matter PM2.5 screen

    Particulate matter PM2.5


    Shows microscopic particles smaller than 2.5 microns, including smoke, bacteria and allergens.

  • Particulate matter PM10 screen

    Particulate matter PM10


    Shows particles smaller than 10 microns, including pollen, dust and pet dander.

  • Formaldehyde screen

    Formaldehyde (HCHO)


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

  • Volatile Organic Compounds screen

    Volatile Organic Compounds (VOCs)


    Shows gases released from a wide range of sources, such as aerosol sprays and air fresheners. They include benzene, household fumes and odours.

  • Nitrogen Dioxide screen

    Nitrogen Dioxide (NO2)


    Shows oxidising gases such as NO2, released by combustion. Includes cigarette smoke, car emissions, candles and gas stoves.

  • Filter life screen

    Filter life


    Shows how much filter life remains on the HEPA+Carbon filter. So you know when to replace it.

Understanding pollutant levels

When a pollutant reduces your air quality, its icon appears on screen. In this case, PM10. The coloured bar on the left indicates how much of the pollutant is present, and will continually update as the machine purifies your air.

  • Fair pollutant levels screen

    Fair


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

  • Good pollutant levels screen

    Good


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

  • Poor pollutant levels screen

    Poor


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

  • Very poor pollutant levels screen

    Very poor


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

Using the remote control

  • Purification and temperature settings


    Select Auto mode and your on-board sensors will intelligently adjust settings according to your air quality.

  • Oscillation and airflow


    Watch our video guide on how to customise the angle, speed and direction of airflow.

  • Sleep timer and Night mode


    Set the Sleep timer to turn your purifier off, or use Night mode for the quietest settings and a dimmed screen.

Using the Dyson Link app

  • App scheduling

    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 Help section

    Help is at hand


    Not sure what NO2 or VOCs are? Find instant answers to air quality questions in our app's help section.

Maintaining your purifier

To ensure optimum air purification performance, we recommend replacing your HEPA+Carbon filter every 12 months. Your Catalytic filter never needs replacing.

Frequently asked questions

Increasing airflow will create a cooling effect using purified air, so you may find it beneficial to change your purifier heater'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 heater's LCD display, consider enabling Night-time mode using your remote control or the Dyson Link app. During operation, a small moon icon indicates that your purifier heater 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 purifier heater's LCD display. When your machine is purifying the air, AUTO will be in white. When the air in the room is purified, it will turn green and your purifier heater will remain idle until pollutant levels rise.

Your purifier heater'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 your machine's auto mode.

Your purifier heater is engineered to purify single rooms, so you should use it where you spend the majority of your time at home. When placing the machine, make sure there is at least a few feet of clearance on all sides so that the air can circulate effectively.

Your purifier heater 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.

The HEPA+Carbon filter needs to be changed after 12 months, based on 12 hours’ use a day. The Dyson Catalytic filter is permanent, so you don’t need to change it.

Choose your model

Shop all

Back In Stock
Rating:
4.85% of 5
  • Captures H1N1, H3N2, EV71 viruses and 99.95% of pollutants as small as 0.1 microns
  • Destroys formaldehyde continuously.
  • Fully sealed to HEPA H13 standard filtration
  • Auto senses and reports pollution in real time on Dyson Link App, enabled with voice control.
  • Whole-room purification for larger spaces
Was HK$7,180.00 HK$6,980.00 Save HK$200.00

Shop all

Back In Stock
Rating:
5% of 5
  • Captures H1N1, H3N2, EV71 viruses and 99.95% of pollutants as small as 0.1 microns
  • Destroys formaldehyde continuously.
  • Fully sealed to HEPA H13 standard filtration
  • Auto senses and reports pollution in real time on Dyson Link App, enabled with voice control.
  • Whole-room purification for larger spaces
Was HK$7,180.00 HK$6,980.00 Save HK$200.00

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