Support for your Dyson HEPA Big+Quiet Formaldehyde purifier
Here you can find helpful tips, video guides and advice.
Setting up your purifier
Quickly set up your purifier for the first time or follow the video for basic set-up at a later date.
Understanding the LCD screen
The LCD screen displays the fan speed setting and the CO₂ level in the room – reporting it in real time.
CO₂ is at a safe level.
CO₂ is building up. It may be advisable to take preventative measures such as opening a door or window.
CO₂ has built up to a level of concern. It's advisable to take action, like opening a door or window.
Maintaining your purifier
Filter care for optimum performance.
Replacing the carbon filter
8760 hours of use To keep your carbon filter working effectively, we recommend changing it at least every 8760 hours of use, or sooner if necessary.
Replacing the HEPA filter
The fully sealed HEPA filter only needs replacing every 21900 hours of use.3 Located in the outer cover, it’s quick and easy to change.
It's our business to understand air pollution
So it's yours that doesn't suffer. The bottom line is that pollutants can build up inside commercial environments. Many items, from flooring and furniture, to printer emissions and building materials, can release microscopic particles and gases. This includes formaldehyde, which can keep emitting over time. Dyson Big+Quiet Formaldehyde automatically removes and destroys it, continuously.
Common indoor pollutants
This volatile gas can emit from the woods, glues and fabrics found in flooring and furniture.
Pollen and allergens
Plants and flowers may release microscopic pollen into the air.
Outdoor air pollution
Tree pollen, vehicle exhaust fumes and particulate matter can enter and get trapped indoors.
Volatile Organic Compounds may be released as gaseous chemicals from paint and printers.
PM0.1 from exhaust fumes can penetrate indoors or emit from generators and appliances.
Odours from air fresheners and cooking can affect the air we breathe indoors.