Dyson Purifier Humidify+Cool Formaldehyde
Detects and destroys formaldehyde, continuously.¹ Purifies and hygienically humidifies a whole room.² Removes 99.97% of particles as small as 0.3 microns. Lifetime solid-state formaldehyde sensor.
Captures dust, allergens and viruses,* including COVID-19 virus.**
Only at Dyson: Exclusive technology and White/Gold colourway.
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.
Helpful tips about humidifying your air
Dyson purifier humidifiers let you achieve your desired humidity either automatically or manually. In Auto mode, just set it and forget it. In manual mode, the LCD indicates if you need to increase airflow – which may help you reach your target quicker. And remember, keeping your machine away from drafts and turning down your home’s heating or AC units can also improve performance.
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.
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
Destroys formaldehyde, continuously
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.
Circulates purified humidified air
Dyson Air Multiplier™ technology mixes and circulates purified, humidified air throughout the room.²
Constantly monitors your air quality, automatically adjusting airflow to reach and maintain the most comfortable humidity level.
Diverts airflow through the back of the machine. To purify and humidify, without cooling you.
Control it hands-free with compatible voice services.⁵
In warmer weather, a powerful stream of purified, humidified airflow can cool you down.⁷
An efficient water management system and a 5 litres tank give you up to 36 hours⁶ of hygienic humidification without regular refilling.
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.
Real data, real time
Control and monitor air quality from anywhere using the MyDyson app.⁵
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.
Product diameter (skirt)
Product diameter (shrouds)
In the box
Dyson Purifier Humidify+Cool Formaldehyde PH04 (White/Gold)
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 MyDyson app.⁵
Choose your model
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¹ Third 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.
² Tested for purification coverage in an 2860ft³ chamber. Tested for humidification coverage in a 1447ft³ chamber.
³ Gas capture rates vary.
⁴ Tested to DTM-004533. Tested to DTM-004532.
⁵ Requires 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.
⁶ Based on fan speed 1.
⁷ Fan not air conditioning unit.
* Dyson purifiers were challenged with airborne influenza A (H1N1 virus), MS2 bacteriophage at an independent lab, using a 30 m3 chamber. After 60 minutes at maximum fan speed, the airborne concentration in the chamber was reduced up to 99.9 %. Real-life efficacy may vary.
** Dyson purifiers were challenged with airborne SARS-CoV-2 (the virus that causes COVID-19) at an independent lab, using a 0.37 m3 chamber for 90 seconds. Dyson Purifiers were also challenged with Phi-6 bacteriophage (a surrogate to test SARS-CoV-2) at an independent lab, using a 30 m3 chamber. After 90 minutes at maximum fan speed, the airborne concentration in the chamber was reduced by 99.9 %. Real-life efficacy may vary.