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Removes 99.95% of ultrafine particles³
Dyson purifier humidifier fan
In stock


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Dyson purifier humidifier fan

Dyson Purifier Humidify+Cool Formaldehyde PH04

Purifies and hygienically humidifies the whole room⁴, and cools you.

HEPA 13 filter captures 99.95% of pollutants as small as 0.1 microns² Even destroys formaldehyde.³

Connects to the MyDyson™ app

H 923mm x L 312mm x W 28mm


  • Airflow at max. setting

    253 l/s

  • Oscillation/Angle

    90 degrees

  • Cord length

    2 m

  • Number of speed settings


  • Total height

    923 mm

  • Air treatment type

    Purifier, fan and humidifier

  • Temperature settings


  • HEPA filter

    HEPA H13

  • Weight

    8.29 kg

  • Airflow at max. setting

    350 l/s

  • Sound level

    61 Decibel

  • Product diameter (skirt)

    220 mm

Dyson Purifier Humidify+Cool Formaldehyde
  • Height

    92.3 cm

  • Length

    31.2 cm

  • Width

    28 cm

In the box

Dyson Purifier Humidify+Cool™ PH04 Formaldehyde

Dyson Purifier Humidify+Cool™ PH04 Formaldehyde

Overall rating

78% of reviewers would recommend to a friend.

Worth Every Penny


My older dog has had a cough. I got this to try to help him. He loves the thing. He likes sleeping near it. His I believe this to be helping keeping his airways less irritated since he is not coughing anywhere near as much with the condition he has. The phone app is awesome. I am able to keep an eye on humidity levels while at work to make sure my dog has the best air possible. Thanks Dyson. 😊

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.⁶ With a hassle-free Deep clean cycle that  eliminates mineral build-up throughout your machine's water system.

Are Dyson Purifier Humidifiers good for your skin?

Through robost scientific testing, we found that humidified air from the Dyson Purifier Humidfy+Cool range results in higher skin hydration over a three-hour period compared to dry air, particularly if the skin was previously exposed to dry environmental conditions. Thereby, we can confidently say that they help keep your skin hydrated.

How do Dyson Purifier Humidifiers benefit your skin?

The Dyson Purifier Humidify+Cool range automatically maintains the target level of moisture in the air and with auto mode, scans the air for the signs of dryness, kickstarting the machine to humify the air only when needed. Through Dyson ultraviolet cleanse technology, every drop of water if further exposed to a powerful 275nm UV light that allows for only cleansed water to rehydrate the purified air abck into the whole room.

What is different about the Dyson Formaldehyde range?

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.

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 Pure Humidify+Cool™ Formaldehyde 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 MyDyson™ app. Running a Deep clean cycle helps to eliminate odours that occur through poor maintenance.

  • 1 Based on the Wellness Powerlist by Glamour UK 2023.