

Dyson Purifier Humidify+Cool Formaldehyde
Detects and destroys formaldehyde, continuously¹
Purifies and hygienically humidifies a whole room²
Lifetime solid-state formaldehyde sensor
Removes 99.97% of particles as small as 0.3 microns
Free shipping
2-year warranty
A cleaner, more comfortable environment
The Dyson purifier humidifier is engineered to help improve your air quality. Its activated carbon filter removes gases, its HEPA filter captures 99.97% of particles as small as 0.3 microns and a catalytic filter destroys formaldehyde.¹ Air Multiplier™ technology then projects purified, humidified air throughout the room² – cooling you when required.
Dyson Purifier Humidify+Cool Formaldehyde PH04 (White/Gold)

Technology
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Senses and reports, automatically
Three sensors constantly monitor your air – diagnosing pollutants at a molecular level and displaying live air quality in real-time reports.
Precisely detects formaldehyde
A lifetime solid-state sensor detects formaldehyde molecules – 500 times smaller than 0.1 microns.
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Captures gases and particles
Captures 99.97% of particles as small as 0.3 microns. Combined with activated carbon, it also removes odours and gases including VOCs.³
Destroys potentially harmful bacteria
Dyson Ultraviolet Cleanse technology exposes every drop of water to a powerful λ275nm UV light, to hygienically humidify.⁴
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Destroys formaldehyde, continuously.¹
A catalytic filter continuously traps and breaks down formaldehyde molecules into water and CO₂. And it never needs replacing.¹
Dyson’s latest purifiers are fully sealed to HEPA H13
To prevent pollutants leaking back into the air, it's not just the filter that's sealed to HEPA standard, it's the whole purifier humidifer.
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Features
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Circulates purified humidified air
Dyson Air Multiplier™ technology mixes and circulates purified, humidified air throughout the room.²
Auto mode
Constantly monitors your air quality, automatically adjusting airflow to reach and maintain the most comfortable humidity level.
Diffused mode
Diverts airflow through the back of the machine. To purify and humidify, without cooling you.
Voice control
Control it hands-free with compatible voice services.⁵
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Cools you
In warmer weather, a powerful stream of purified, humidified airflow can cool you down.
Continuous humidification
An efficient water management system and a 5 litres tank give you up to 36 hours⁶ of hygienic humidification without regular refilling.
Breeze mode
Unique algorithms vary the airflow to mimic a cooling, refreshing breeze.
Deep clean cycle
Activate the machine's hassle-free Deep clean cycle at the touch of a button. It will guide you through the simple step-by-step process.
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Real data, real time
Control and monitor air quality from anywhere using the Dyson Link app.⁵
Night mode
Purifies using the quietest settings and a dimmed display. Sleep timer enables pre-set intervals of use, between 15 minutes and 9 hours.
Jet Axis control
Two oscillators guide the airflow – projecting separately, or in unison, so you can choose different airflow modes.
Simple filter changes
Built-in reminders show you when your combination filter needs changing. It's quick and easy to do.
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Specifications
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Weight
8.2 kg
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Product diameter (skirt)
312 mm
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Product diameter (shrouds)
280 mm

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Height
923 mm
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Length
312 mm
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Width
280 mm
In the box

Dyson Purifier Humidify+Cool Formaldehyde PH04 (White/Gold)
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Remote control
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Dyson Genuine Filter
Frequently asked questions
We've re-engineered our latest purifier humidifier to be fully sealed - what goes inside, stays inside. With a hassle-free Deep clean cycle that removes mineral build-up throughout your machine's water system.
The Dyson Purifier Humidify+Cool Formaldehyde 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. Common sources of formaldehyde could be: 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.
Your Dyson Pure Humidify+Cool™ is engineered to purify and humidify single rooms, so you should use it where you spend the majority of your time at home. When placing the machine, make sure there's at least a few feet of clearance on all sides, so that the air can circulate effectively. Close doors and windows and place away from air vents.
Yes. The machine works as a purifier humidifier, or just a purifying fan.
This depends on the water hardness where you live. The machine prompts you to run the cycle once a month in hard water areas. It prompts you less often in softer water areas. You can select your water hardness with the Dyson Link app.⁵
Choose your model
Buy direct from the people who made it
¹Third party full machine testing based on GB/T 18801-2015 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
²Tested for purification coverage in an 2860ft³ chamber. Tested for humidification coverage in a 1447ft³ chamber.
³Gas capture rates vary.
⁴Tested to DTM-004533. Tested to DTM-004532.
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.
⁶Based on fan speed 1.