Support for your Dyson Purifier Cool Autoreact
Here you can find helpful tips, video guides, maintenance advice, your user manual and more.
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Watch how to quickly get up and running with our step-by-step video guide.
Using your purifier
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.
Nitrogen Dioxide (NO2)
Shows oxidising gases such as NO2, released by combustion. Includes cigarette smoke, car emissions, candles and gas stoves.
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.
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.
When the yellow section of the coloured bar is highlighted, your purifier is detecting a moderate level of the type of pollutant.
When the green section of the coloured bar is highlighted, your purifier is detecting a very low level of the type of pollutant.
When the orange section of the coloured bar is highlighted, your purifier is detecting a high level of the type of pollutant.
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 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.
Maintaining your purifier
To ensure optimum air purification performance, we recommend replacing your HEPA+Carbon filter every 12 months.
Frequently asked questions
The combination filter needs to be changed after 12 months, based on 12 hours’ use a day.
Yes. Your Dyson purifier filter is guaranteed against original defects in materials and workmanship for a period of 12 months from the date of purchase. Filter units that must be replaced because the filter life has expired are not covered by the warranty.
If you're concerned by the brightness of your purifying fan heater's LCD display, consider enabling Night-time mode using your remote control. 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 purifying fan'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 purifying fan will remain idle until pollutant levels rise.
Your purifying 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.
Your purifying 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.
Your purifying fan 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.
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.
The Dyson guarantee
'How to' videos
To help you get the most from your machine. Quick and easy.
Tailored reminders that will keep your machine working at its best, for longer.
Exclusive owner benefits
Priority access to previews of new Dyson technology, events and offers.
Expert advice. 7 days a week.
Freephone and live chat. Open 8am - 8pm Monday to Friday, 8am - 6pm Saturday and Sunday.
Free Dyson parts and labour
Replacement parts or repairs if something goes wrong during your guarantee period.
If we can’t repair your machine, we’ll replace it while it's under guarantee. Fast.
We don’t stop caring about our machines once they’re yours. Activating your guarantee allows us to give you a tailored, complementary, direct service for your machine. Even after your guarantee has ended, we’ll still be on hand to help.