
Air purifying humidifiers
Our purifying humidifiers help to maintain a cleaner, more comfortable environment all year round by removing pollutants and rehydrating dry air. They also provide cooling airflow when you need it.
Buy direct from the people who made it
Glossary
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Allergens
An 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, mould, and pollen.
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Bacteria
Microscopic, 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.
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Benzene
Benzene 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.
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Carbon dioxide (CO₂)
A colourless greenhouse gas, which comes from the extraction and burning of fossil fuels. Increased CO₂ levels can impact cognitive function.
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Formaldehyde
This 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.
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H1N1 virus
This 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.
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Humidification
A 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.
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HEPA 13
HEPA (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 per cent particle removal at the most penetrating particle size.
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Microns
Airborne 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.
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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.
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Purification
The 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.
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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.
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Pet dander
Pet 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.
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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.
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Pollen
Pollen 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.
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House dust mites
Dust 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.
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Aspergillus mould
A 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.
Find the best air purifier + humidifier for you
Learn more about Dyson purifying + humidifying fans to find the most suitable one for your home.
What makes a good purifier + humidifier?
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Senses
Automatically detects airbone particles and gases and diagnoses and reports the in real time.
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Destroys potentially harmful bacteria
Dyson Ultraviolet Cleanse technology exposes every drop of water to a powerful λ275nm UV light, to hygienically humidify.
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Captures
Sealed HEPA filters capture 99.95% of microscopic allergens and pollutants as small as 0.1 microns.¹
Choose your model

Which pollutants could be hiding in your home?
Discover the invisible pollutants that might be in the air you and your family breathe every day.
- 1 Dyson’s product filtration efficiency at MPPS achieved 99.95% H13 HEPA level defined by EN1822, compared to the purifiers based on market data [from March 2020]. Product filtration efficiency tests conducted at IBR US within a chamber specified in ASTM F3150, under max mode and using particles challenged by oil according to EN1822.
- 2 Tested for filtration efficiency at 0.1 microns (EN1822, ISO29463).
- 3 Hulin et al, 'Respiratory health and indoor air pollutants based on quantitative exposure assessments', European Respiratory Journal, October 2012.
Find the best purifier + humidifier for you
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Latest technology£699.99Shop now
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
£649.99Shop now
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Humidifies and cools you
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Humidifies and cools you
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Purifies the whole room
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Purifies the whole room
Advanced filtration
Formaldehyde - This 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.
With long-life filters that are quick and easy to replace, Dyson purifiers capture 99.95% of ultrafine particles¹ such as allergens and pollutants from the air.
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Destroys formaldehyde
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Machine fully sealed to lock in pollutants
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Machine fully sealed to lock in pollutants
HEPA
HEPA (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 per cent particle removal at the most penetrating particle size.
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
360° HEPA & activated carbon filtration
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
360° HEPA & activated carbon filtration
Smart home enabled
Access performance data, set schedules and more with the MyDyson app. Control with your voice, using Amazon Alexa or Siri.
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
MyDyson app & voice control
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Senses, diagnoses and report automatically
Maintains air quality automatically. Reports in real time on LCD screen
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Additional features
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Dyson Purifier Humidify+Cool™ PH04 Formaldehyde
Dyson Air Multiplier™ technology
90˚ oscillation
Sleep timer
10 speed settings
Night mode
Diffused mode
Remote control included
Filter casing contains recycled plastic
Guarantee
2-year guarantee
Dimensions
923 x 312 x 280mm
Weight
8.2kg
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Dyson Purifier Humidify+Cool™ PH3A Autoreact
Dyson Air Multiplier™ technology
350˚ oscillation
Sleep timer
10 speed settings
Night mode
Diffused mode
Remote control included
Filter casing contains recycled plastic
Guarantee
2-year guarantee
Dimensions
923 x 312 x 280mm
Weight
8.05kg
- Dyson Purifier Humidify+Cool™ PH04 Formaldehyde Shop now Learn more
- Dyson Purifier Humidify+Cool™ PH3A Autoreact Shop now Learn more