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Refurbished Dyson PH04 Purifier Humidify + Cool Formaldehyde (White/Gold) by Dyson - refurbished condition

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

Brand: Dyson

Condition: Refurbished
$61999
$1,01999
-40% Save $40000
Updated: 2 days ago

Description

Refurbished Purifier Humidify+Cool Formaldehyde™ PH04 (White/Nickel/Gold) purifies and hygienically humidifies a whole room, capturing 99.97% of particles as small as 0.3 microns. Get exclusive benefits when you buy directly from Dyson, including free next-day or scheduled delivery.

Key Features & Technology

A cleaner, more comfortable environment

A cleaner, more comfortable environmentThe Dyson purifier humidifier is engineered to help improve your air quality. Its activated carbon filter neutralises gases, its HEPA H13 filter captures 99.97% of particles as small as 0.3 microns³ and a catalytic filter destroys formaldehyde.¹ Air Multiplier™ technology then projects purified, humidified air throughout the room² – cooling you when required.Only at Dyson: Exclusive technology and White/Gold colourway.

Circulates purified humidified air and cools

Circulates purified humidified air and coolsDyson Air Multiplier™ technology circulates purified and humidified air throughout the room,⁸ and cools you in warmer weather.

Night mode and Sleep timer

Night mode and Sleep timerPurifies using its quietest settings and a dimmed display. Sleep timer enables pre-set intervals of use, between 15 minutes and 9 hours.

Real data in real time

Real data in real timeControl and monitor your air quality from anywhere using the MyDyson™ app.¹⁰

Smart technology with voice control

Smart technology with voice controlControl hands-free, using compatible voice services such as Amazon Alexa, Google Assistant or Siri.¹⁰

Simple filter changes

Simple filter changesQuick and easy filter changes. With automatic reminders on the LCD screen or MyDyson™ app.

Senses and reports, automatically

Senses and reports, automatically

Senses and reports, automaticallyIn Auto mode our purifier reacts automatically to capture pollutants, only using energy when needed. With live air quality reports displayed on the LCD screen or MyDyson™ app.

Captures gases and ultrafine particles

Captures gases and ultrafine particles

Captures gases and ultrafine particlesHEPA H13 filter captures 99.97% of particles as small as 0.3 microns.³ Activated carbon removes odours and gases, including VOCs.⁵

Fully sealed to HEPA H13 standard⁹

Fully sealed to HEPA H13 standard⁹

Fully sealed to HEPA H13 standard⁹To prevent pollutants leaking back into the air, it's not just the filter that's sealed to HEPA H13 standard, it's the whole machine. So what goes inside, stays inside.⁹

Hygienically humidifies with UV light

Hygienically humidifies with UV light

Hygienically humidifies with UV lightDyson Ultraviolet Cleanse technology exposes every drop of water to a powerful λ275nm UV light to destroy 99.9% of bacteria in the water.²

Destroys formaldehyde in billions  of catalytic tunnels

Destroys formaldehyde in billions of catalytic tunnels

Destroys formaldehyde in billions of catalytic tunnelsDyson's unique catalytic filter continuously traps and converts formaldehyde into water and CO₂. And it never needs replacing.⁶

Breeze mode

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

Diffused mode

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

Allergens

AllergensAn allergen is a substance that can cause an allergic reaction by triggering the body’s immune system. Common indoor allergens include dust mite droppings, pet dander, mold, and pollen.

Bacteria

BacteriaMicroscopic, single-celled organisms that exist in their millions, in every environment. Not all bacteria are harmful, but some can have adverse effects, such as E. coli.

Benzene

BenzeneBenzene is colourless, flammable liquid produced by both natural and man-made processes. It’s a natural part of crude oil, gasoline, and cigarette smoke. Indoors, it comes from products such as glues, paints, furniture wax, and detergents.

Carbon dioxide (CO₂)

Carbon dioxide (CO₂)A colourless greenhouse gas, which comes from the extraction and burning of fossil fuels. Increased CO₂ levels can impact cognitive function.

Formaldehyde

FormaldehydeThis colourless, flammable gas is used in some building materials and household products. Sources can include some fabrics found in flooring and furniture, glues, paints, varnishes, air fresheners, and household cleaners.

H1N1 virus

H1N1 virusThis subtype of Influenza A virus, also known as swine flu, caused a global flu outbreak. H1N1 produces respiratory infectious diseases in humans and pigs. Symptoms can be similar to seasonal flu.

HEPA 13

HEPA 13HEPA (High Efficiency Particulate Air) is an air filter efficiency standard and a measure of a filter’s performance. To achieve this standard, filters must meet a minimum of 99.97% particle removal at the most penetrating particle size.

Humidification

HumidificationA process of increasing air moisture content through the addition of water vapour or steam. Humidifiers can add moisture to the air in dry conditions, creating a more comfortable indoor environment when needed.

Microns

MicronsAirborne particles are usually described in microns.  One micron is equal to one-millionth of a metre. The human eye can see debris and dust that are approximately 25 microns in size.

Nitrogen dioxide (NO₂)

Nitrogen dioxide (NO₂)Nitrogen dioxide is a liquid below 21.2 °C and a gas at higher temperatures. It is toxic to humans in both states. Gas stoves and space heaters are the most common indoor sources of NO₂  emissions. Other sources include improperly vented furnaces and water heaters.

Pet dander

Pet danderPet dander is made up of tiny particles of skin, saliva and urine, shed by animals with fur or feathers. Pet dander lingers in the air before settling on surfaces such as furniture, bedding, and fabrics. Exposure to these airborne particles can trigger allergies.

Particulate matter (PM)

Particulate matter (PM)Particulate matter contains microscopic solids or liquid droplets, measured in microns. Indoor PM can be generated through many day-to-day activities such as cooking, cleaning, and the burning of candles and fires.

Purification

PurificationThe process of making something free of any contaminants or physical impurities. Air purification is designed to filter the air in your home – removing pollutants such as dust, allergens and viruses.

Volatile organic compounds (VOCs)

Volatile organic compounds (VOCs)Volatile organic compounds are potentially harmful gases found in many household products. Common sources include paints, varnishes, air fresheners, cosmetics, and cleaning products.

Pollen

PollenPollen is a powdery substance released from seed plants as part of their reproduction process. It typically appears from trees in the spring, grasses in the summer, and weeds in the autumn. Pollen grains are among the most common allergens.

House dust mites

House dust mitesDust mites are tiny insects that commonly live in household dust. They are one of the biggest causes of allergies. Each gram of house dust contains approximately 1000 dust mites.

Aspergillus mold

Aspergillus moldA common name for a visible group of fungi, mould thrives wherever there is dampness – sending out millions of spores into the air. Exposure to mould occurs via inhalation, skin contact, or ingestion.

What's in the box

  • 360° Glass HEPA and Activated Carbon Filter
    360° Glass HEPA and Activated Carbon Filter 360 Combi Glass HEPA + Carbon air purifier 2-in-1 filter. We recommend replacing your filter every 12 months or when notified by your machine.
  • Power supply
    Power supply
  • Remote control
    Remote control Curved and magnetized to store neatly on top of the machine

Tested certified

Tested certifiedAll Dyson Renewed machines are meticulously inspected, fully serviced and tested to ensure they meet our quality standard.

Warranty and Expert support

Warranty and Expert supportAll Dyson Renewed machines are covered by the Dyson warranty - one year or two years. Please check your machine page for more information. For any questions, a Dyson Expert will offer immediate online support.

Cleaned and sanitized

Cleaned and sanitizedAll contact surfaces and machine attachments are thoroughly cleaned and sanitized, and fitted with genuine replacement parts where needed.

Brand-new recyclable packaging

Brand-new recyclable packagingAll Dyson Renewed machines are packaged in a brand-new recyclable box. Secured for damage-free transit, and efficient for minimal waste.

What's included with a refurbished machine

Dyson Renewed machines are packaged with all genuine parts, in a brand-new recyclable box.

1. Carefully inspected

1. Carefully inspected

2. Expertly cleaned and tested

2. Expertly cleaned and tested

3. Renewed with genuine parts

3. Renewed with genuine parts

4. Quality checked and certified

4. Quality checked and certified

Specifications

  • Sound level (Max): 62.4 dBA
  • Sound level (Quiet Mode): 46 dBA
  • Weight: 8.2 kg
  • Product diameter (skirt): 312 mm
  • Product diameter (shrouds): 280 mm
  • Height: 923 mm
  • Length: 312 mm
  • Width: 280 mm

Dyson Renewed Machines

Machine condition explained

Dyson Renewed machines have been expertly serviced and hygienically cleaned. We test every machine to ensure it performs to our uncompromising standards. Any imperfections are purely cosmetic and can range from micro scratches and light scuffs to more visible marks, or discolouration to paint finishes and surfaces.

Condition Guide

Certified Refurbished

Professionally restored to like-new performance.

  • Inspected, repaired if needed, and tested by certified technicians
  • Meets or exceeds original manufacturer specifications
  • May come with a warranty from the seller
  • Internally performs identically to a new unit

Sold by

Dyson Outlet

Verified Retailer

Manufacturer-direct refurbished & outlet products

  • Sold directly by Dyson
  • Dyson-certified quality standards
  • Manufacturer warranty may apply
  • Genuine Dyson parts and service

Product Details

SKU:
dc-379489-02
Model:
379489-02
Country:
CA

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $400 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Dyson products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.

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