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Latest technology Removes 99.95% of ultrafine particles³
Dyson air purifier humidifier fan
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Dyson air purifier humidifier fan

Dyson Purifier Humidify+Cool Formaldehyde (White/Gold)

Purifier. Humidifier. Fan. All in one.

Automatically senses, captures, and traps pollutants for cleaner air

Detects and destroys formaldehyde¹ 

Purifies and humidifies the whole room³

Dyson 2-year warranty

Automatically purifies and hygienically humidifies for a healthier, more comfortable environment

The latest Dyson purifier humidifier is engineered to help improve your air quality. Dyson's most advanced filtration system combines a precise, solid-state formaldehyde sensor with a unique catalytic filter that continuously destroys formaldehyde.¹ A filter removes gases and odors and a HEPA filter captures 99.97% of particles 0.3 microns in size. And powerful Air Multiplier™ technology projects purified, humidified air throughout the room.³

Dyson Purifier Humidify+Cool Formaldehyde™ PH04 (White/Gold)

Overall rating

53% of reviewers would recommend to a friend.

Great gift!


My daughter and her husband gave my the Dyson purifier+ humidity as a gift, they have one an my daughter's allergies are not as bad while at home specially at night while mine were terrible. Big improvement with my overall breathing problems due to allergies and asthma, we keep ours in our bedroom I believe she moves hers around the house.

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, this machine is engineered to purify and humidify single rooms, and works most efficiently in a sealed environment.


  • Senses and reports, automatically

    Integrated sensors constantly analyze your air, while our unique algorithm cross-checks data every second. It diagnoses pollutants at a molecular level, displaying live results on the LCD.

  • Captures gases and ultrafine particles

    The HEPA filter captures 99.97% of particles 0.3 microns in size. An additional filter also removes odors and gases including VOCs.

  • Destroys formaldehyde, continuously.

    Household items like wood flooring and fabric can release formaldehyde for years. The Dyson catalytic filter traps and breaks down formaldehyde molecules into water and CO2. And it never needs replacing.

  • Precisely detects formaldehyde

    A lifetime solid-state sensor detectsformaldehyde molecules – 500 times smaller than 0.1 microns.

  • Fully sealed to HEPA H13 standard⁵

    To prevent pollutants leaking back into the air, it's not just the filter that's sealed to HEPA H13 standard⁴, it's the whole machine. So what goes inside, stays inside.


  • Circulates purified humidified air

    Dyson Air Multiplier™ technology mixes and circulates purified, humidified air throughout the room.

  • Cools you when needed

    In warmer weather, a powerful stream of purified, humidified airflow can cool you down.⁸

  • Auto mode

    Constantly monitors your air quality, automatically adjusting airflow to reach and maintain the most comfortable humidity level and react to pollution events. 

  • Continuous humidification

    An efficient water management system and a one gallon tank give you up to 36 hours⁶ of hygienic humidification without regular refilling.

  • Deep clean cycle

    Activate the machine's monthly hassle-free Deep clean cycle at the touch of a button. It will guide you through the simple step-by-step process.

  • Simple filter changes

    Built-in reminders show you when your combination filter needs changing. It's quick and easy to do.

  • App control

    Control and monitor air quality from anywhere using the MyDyson app.⁵

  • Voice control

    Control it hands-free with compatible voice services including Amazon Alexa, Siri and Google Assistant.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.

  • Breeze mode

    Unique algorithms vary the airflow to mimic a cooling, refreshing breeze.

  • Backward airflow mode

    Diverts airflow through the back of the machine. To purify and humidify, without cooling you.

  • Certified Asthma and Allergy friendly

    Dyson purifiers are certified asthma and allergy friendly by the Asthma and Allergy Foundation of America.

  • National Psoriasis Foundation Recognized


  • Weight

    18 lb

  • Airflow at max. setting

    87 gallon

  • Oscillation/Angle

    90 degrees

  • Cord length

    6 ft

  • Number of speed settings


  • HEPA filter

    HEPA H13

Dyson Purifier Humidify+Cool Formaldehyde
  • Height

    36.33 in

  • Length

    12.228 in

  • Width

    11.02 in

In the box

Dyson Purifier Humidify+Cool Formaldehyde™ PH04 (White/Gold)

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Frequently asked questions

What is new about the Dyson purifier humidifier and how is it different to other purifier humidifiers?

We've re-engineered our latest purifier humidifier to be fully-sealed to HEPA H13 standard.⁴ So what goes inside, stays inside. With a hassle-free Deep clean cycle that eliminates mineral build-up throughout your machine's water system.

What is different about the Dyson Purifier Humidify+Cool Formaldehyde™️ range?

The Dyson Purifier Humidify+Cool Formaldehyde™️ has all of the capabilities found in our Dyson Purifier Humidify+Cool™️ 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.

What is formaldehyde and what are common sources of it?

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.

Where should I place the purifier humidifier in my room?

Your Dyson Purifier 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.

Can I switch off humidification?

Yes. The machine works as a purifier humidifier, or just a purifying fan.

How often should I run a Deep clean cycle?

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. Running a Deep clean cycle helps to eliminate odors that occur through poor maintenance.

Do Dyson purifiers capture wildfire smoke?

Dyson purifiers capture wildfire smoke.9

  • Replacement filter

    Replacement filter

  • The Descaling kit and three sachets of product included.

    Cleaning kit

Choose your model

Latest technology

Dyson Purifier Humidify+Cool Formaldehyde™ PH04 (White/Gold)

Hygienically humidifies.

Detects and destroys formaldehyde.¹ Automatically senses, captures, and traps pollutants.

Control with remote, MyDyson app, voice services.⁵

Color:  White / Gold

What's included

See all Hide Click to learn more
  • Remote control

    Curved and magnetized to store neatly on the machine.

  • Dyson Genuine filter

    Filter for your Dyson Purifier


See details
Latest technology

Dyson Purifier Humidify+Cool Formaldehyde™ PH04 (Nickel/Gold)

Hygienically humidifies.

Detects and destroys formaldehyde.¹ Automatically senses, captures, and traps pollutants.

Control with remote, MyDyson app, voice services.⁵

Color:  Nickel/Gold

What's included

See all Hide Click to learn more
  • Remote control

    Curved and magnetized to store neatly on the machine.

  • Dyson Genuine filter

    Filter for your Dyson Purifier


See details

¹Third party full machine testing based on GB/T 18801-2015. Results may vary in practice.

²Tested to DTM-004533.

³Tested for purification coverage in an 81m³ chamber. Tested for humidification coverage in a 41m³ chamber.

Tested with particle challenge per EN1822 in a chamber per ASTMF3150. Tested at maximum fan speed.

Requires device to run app, 2.4GHz or 5GHz Wi-Fi connection or mobile data, and Bluetooth® 4.0 support. For app compatibility, please search for ‘Dyson Link’ on the iOS App Store or the Google Play Store. Standard data and messaging rates may apply. Voice control requires a compatible voice service.

Based on fan speed 1.

⁷US Environmental Protection Agency, The Total Exposure Assessment Methodology Study, 1987.

⁸PH03 is a humidifier and fan, not an air conditioning unit.

9Based on capture of particles, ammonia, benzene, and acetic acid.