Dyson Purifier Hot+Cool Formaldehyde™ HP09 (White/Gold)
Powerful circulation to purify the whole room
Only Dyson purifiers have Air Multiplier™ technology to draw in distant pollutants and project purified air throughout the room.²
We test beyond the industry standard. For real living spaces.
Dyson engineers designed the POLAR test to challenge the industry standard test methods - measuring purification, sensing, and circulation to ensure the whole room is purified properly.
Some CADR methods do not measure purification performance in a realistically-sized room.
In this 28.5m³ room, one fan mixes the air before the test, and another circulates air during the test. Only one sensor measures air quality.
Dyson's POLAR test goes further to measure purification throughout a realistically-sized room.
In this 81m³ room, there are no fans except the air purifier with nine different sensors to measure even-room air quality.
Poor air quality isn't just a problem outside.
It's a problem inside too.
From pets and flowers, to sprays and stoves, our homes can trap pollutants in the air. That's why Dyson purifiers automatically sense and remove them.
Common household pollutants
Common allergens - pet dander, pollen and dust
Gas stoves and car exhausts
Industrial emissions and smoke
Carpets, rugs, and flooring
Household fumes and cooking
Benzene and VOCs
Cleaning products and candles
Destroys formaldehyde¹ in billions of catalytic tunnels
Dyson's unique catalytic filter continuously traps and converts formaldehyde into water and CO₂. And it self-regenerates, so it never needs replacing.¹
Fully sealed to HEPA H13 standard
To prevent pollutants from leaking back into the air, it's not just the filter that's sealed to HEPA H13 standard, it's the whole purifier.³ So what goes inside, stays inside.
Get more from your Dyson with the MyDyson™ app▴
Control air quality, wherever you are
Control your air purifier from anywhere with your smart device, whether you’re traveling, at work, or simply at home on the sofa.
Monitor air quality. View reports, fast.
Monitor indoor and outdoor air quality from your smart device. See your machine’s activity as well as temperature, humidity, and filter reports.
Automated filter alerts
You’ll never need to worry about when to replace your filter. We’ll let you know. Helping your machine to always perform at its best.
Cools you when needed
Projects over 77 gallons of air a second for cooling airflow.
Heats when needed
Air Multiplier™ technology projects purified, heated air throughout the room.² Once your target temperature is reached, heating automatically stops.
Backward airflow. Purifies without cooling you.
Airflow is diverted through the back of the machine, maintaining effective purification without cooling you.⁴
Easy filter care
The catalytic filter never needs to be replaced. We recommend replacing the HEPA filter when you're alerted by the MyDyson app or every 12 months, whichever comes first.
For lighter sleepers, it monitors and purifies using the quietest settings along with a dimmed display.
Featured air treatment articles
Cleaner air, cleaner home: how to maintain a healthier space during home renovations
Moving and home makeovers involve new furniture and paint, which could add to the levels of a potentially harmful pollutant called formaldehyde in the home. Here's how to maintain a healthier space during moves and renovations.
Formaldehyde: the invisible indoor pollutant
Although the smell of new paint might fade over time, the emission of potentially harmful gases, such as formaldehyde, can persist. Pollutants like these can continuously ‘off-gas’ for a number of years – but what exactly is formaldehyde and why is it in our homes?
Frequently asked questions
Dyson engineers are perfectionists. Channeling our relentless dissatisfaction, we have re-engineered our latest purifiers to be fully sealed to HEPA H13 standard.³ Two phases of purification sit within a fully-sealed filtration and airflow system to trap pollutants inside, preventing them from leaking back into the air you breathe.
The Dyson Purifier Formaldehyde range has all of the capabilities found in our advanced purification products, but goes a step further to detect and destroy formaldehyde.¹ An added solid-state sensor precisely detects formaldehyde, while our catalytic filter breaks it down into two safer molecules – carbon dioxide and water.
Formaldehyde is a polluting gas formed of carbon, hydrogen, and oxygen that is commonly found in homes. Sources of formaldehyde in your home could include paint and varnishes, air fresheners, mattresses, furniture, household cleaners, carpets, particleboard and plywood, electronics, dryer sheets, nail polish remover, moth balls, toys, fireplaces, and wood burning stoves.
HEPA grades refer to filter efficiency at a certain particle size. HEPA H13 is a filter with a 99.95% removal efficiency of particles down to 0.1 microns per liter of air. Dyson filters also capture 99.97% of particles down to 0.3 microns in size including common pollutants such as allergens, bacteria, viruses, pollen, and mold spores.
We recommend replacing the HEPA+Carbon filter roughly every 12 months, depending on how often you use it. That’s because over time filters can become clogged with pollutants and even let unpleasant odors back into the room. The machine will alert you when it’s time to change filters. A filter life reading can be found on the LCD screen and via the Dyson Link app.⁵ The catalytic filter never needs replacing.
This machine is compliant with safety standard UL 1278, as required by the US government. For this reason, heating and temperature control are not available in the Dyson Link app. Please use your machine’s remote control instead.
Choose your model
*Compared to Dyson Pure Cool purifying fan (TP01/AM11)
¹Third party full machine testing based on GB/T 18801-2018 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
²In maximum setting. Tested for air projection (DTM801), purification coverage in a 2860ft3 room (TM-003711), and heating performance in a 1236ft3 room (DTM961).
³Particle challenge by DEHS oil specified in EN1822 within chamber specified in ASTM F3150. Tested in Max Mode at IBR US, for whole machine efficiency above 99.95%.
⁴Not applicable to heating
5Requires 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
⁶This machine is compliant with safety standard UL 1278, as required by the US government. For this reason, heating and temperature control are not available in the Dyson Link app. Please use your machine’s remote control instead.
9Based on capture of particles, ammonia, benzene, and acetic acid.
Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries.
App Store is a service mark of Apple Inc., registered in the U.S. and other countries.
Google Play and the Google Play logo are trademarks of Google Inc.