Owners

Dyson Purifier Cool Formaldehyde

Support for your Dyson Purifier Cool Formaldehyde purifying fan

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 simple steps to connect your machine to the Dyson Link app.1 

Step 1

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

Step 2

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

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.

User manual

Download your Dyson Purifier Cool Formaldehyde user manual.

How to use your purifier

Understanding the LCD screen icons

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

Indoor Air Quality Index (AQI)

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

Particulate matter PM2.5

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

Particulate matter PM10

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

Formaldehyde (HCHO)

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

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 (NO2)

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

Filter life

Shows how much filter life remains on the combination 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.

Good

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

Fair

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

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

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

Activate Auto mode

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.

Diffused mode

Diffused air is diverted through the back of the machine. To purify, without cooling you.

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

Set and forget

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

Instant control

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

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.

Frequently asked questions

Should I change the fan settings in different seasons?

Increasing airflow will create a cooling effect using purified air, so you may find it beneficial to change your purifier fan'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.

Does the LCD display stay on throughout the night?

If you're concerned by the brightness of your purifier fan'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 fan is on, but the main display turns off after 10 seconds to help avoid sleep disturbance.

How do I know when my purifier fan is in auto mode?

If auto mode is enabled, AUTO will be illuminated on your purifier fan's LED 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 fan will remain idle until pollutant levels rise.

How long should my purifier fan be turned on for?

Your purifier 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 your machine's auto mode.

Where should I place my purifier fan?

Your purifier fan 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.

Should I keep my windows open or closed?

Your purifier fan 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.

How often do the filters need to be changed?

Your purifier fan 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.