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Dyson Purifier Humidify+Cool Autoreact logo
Dyson Purifier Humidify+Cool Autoreact
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original price:
Was $799.99
current price:
Save $200.00

  • Free cleaning kit when you add to basket.
Dyson Purifier Humidify+Cool Autoreact

Dyson Purifier Humidify+Cool Autoreact (White/Nickel)

Purifier. Humidifier. Fan. All In one.

Automatically senses, captures, and traps pollutants for cleaner air

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. An advanced filtration system combines a filter to remove gases and odors with a HEPA filter to capture 99.97% of particles 0.3 microns in size. Powerful Air Multiplier™ technology projects purified, humidified air throughout the room.³

 Family room with Dyson purifier humidifier in action

Helpful air humidifying tips

Dyson purifier humidifiers can achieve desired humidity either automatically or manually in a single room. In Auto mode, set it and forget it. In Manual mode, the LCD prompts you to increase airflow to help you achieve your target quicker. Our machines work 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. A filter also removes odors and gases including VOCs.

  • Fully sealed to HEPA H13

    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.

  • 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. 

  • Backward airflow mode

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

  • Breeze mode

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

  • Jet axis control

    Two oscillators guide the airflow – projecting separately, or in unison, so you can choose different airflow modes.

  • 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.

  • 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

Different angles of the Dyson Purifier+Humidifer Cool Autoreact PH3A
  • Height

    36.33 in

  • Length

    12.28 in

  • Width

    11.02 in

In the box

Dyson Purifier Humidify+Cool Autoreact PH3A (White/Nickel)

Learn more about the Dyson Pure+Cool humidification benefits

  • Dyson PH04 and Nastional Psoriasis Foundation logo

    Psoriasis and air treatment

    Recently, the National Psoriasis Foundation certified its first humidifier purifier: the Dyson Pure Humidify+Cool three-in-one purifier, humidifier, and fan. This is the first machine of its kind to receive this recognition.

  • Melody Cheng wearing the Dyson Air Quality backpack.

    How to manage dry skin during the winter

    Dyson Associate Principal Scientist Naomi Simpson and celebrity aesthetician Shani Darden weigh in on how to mitigate the effects of dry weather by using the Dyson Pure Humidify+Cool and other unique skin care products.

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.⁵ With a hassle-free Deep clean cycle that  eliminates mineral build-up throughout your machine's water system.

Where should I place the purifier humidifier in my room?

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.

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. 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

Dyson Purifier Humidify+Cool Autoreact PH3A (White/Nickel)

Hygienically humidifies

Automatically senses, captures, and traps pollutants.

Projects purified, humidified air around the whole room.⁴ Control with remote. Not app compatible.

What's included

See all Hide Click to learn more
  • Dyson Genuine filter

    Filter for your Dyson Purifier

  • Remote control

    Curved and magnetized to store neatly on the machine.

  • Free cleaning kit when you add to basket.
original price:
Was $799.99
current price:
Save $200.00
Free cleaning kit when you add to basket.
Free cleaning kit when you add to basket.

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.