Dyson Purifier Humidify+Cool Formaldehyde PH04 – Refurbished



The Dyson PH04 detects and destroys formaldehyde, continuously. Purifies and hygienically humidifies a whole room. Removes 99.97% of particles as small as 0.3 microns. Lifetime solid-state formaldehyde sensor.

  • Refurbished, open box by Dyson

Availability: In Stock

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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.


  • 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.
  • 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.

  • Destroys formaldehyde, continuously: A catalytic filter continuously traps and breaks down formaldehyde molecules into water and CO₂. And it never needs replacing.

  • Precisely detects formaldehyde: A lifetime solid-state sensor detects formaldehyde molecules – 500 times smaller than 0.1 microns.

  • Destroys potentially harmful bacteria: Dyson Ultraviolet Cleanse technology exposes every drop of water to a powerful λ275nm UV light, to hygienically humidify.

  • 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.


  • Weight: 8.2 kg

  • Product diameter (skirt): 312 mm

  • Product diameter (shrouds): 280 mm

  • Height: 923 mm

  • Length: 312 mm

  • Width: 280 mm

  • Color: white/gold


  • Remote control, curved and magnetised to store neatly on top of the machine.
  • Dyson Genuine Filter.


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