The Dyson PH04 is a multifunctional air-treatment device: it works as an air purifier, a humidifier, and a fan combining three home-comfort functions in a single sleek unit. It’s designed to improve indoor air quality, manage humidity, and provide cooling airflow as needed.
Features:
Advanced Air Purification
HEPA H13 + Activated Carbon + Catalytic Filtration: The PH04 uses a 360° glass HEPA filter that traps 99.97% of particles as small as 0.3 microns (dust, pollen, pet dander, smoke, etc.), plus an activated carbon layer that neutralizes gases, VOCs, and odors.
Formaldehyde Destruction: Unlike many purifiers, PH04 has a catalytic filter that detects and continuously destroys formaldehyde a common indoor pollutant released by furniture, paints, varnishes, cleaning products, and building materials — converting it into harmless water and CO₂.
Fully Sealed HEPA H13 System: The entire airflow path is sealed to HEPA H13 standard, ensuring no leaks or bypass so pollutants stay trapped inside.
Hygienic Humidification (with Clean Water)
UV-C Water Cleanse: Before humidifying, the water tank is sterilized with ultraviolet light to kill 99.9% of bacteria — providing clean, hygienic humidity (unlike “mist” humidifiers that may spread bacteria).
Continuous Humidification: With a 1-gallon water tank and efficient water management, the unit can run for up to 36 hours without needing a refill.
Auto-Humidity Adjustments: In “Auto” mode, PH04 monitors ambient humidity and air quality, then adjusts its humidification (and purification) automatically to reach the target comfort level.
Smart Air Circulation & Cooling
Air Multiplier™ Technology: Once air is purified and humidified, PH04 uses Dyson’s Air Multiplier system to project the treated air throughout the room — even into corners — to ensure even coverage.
Fan / Cooling Mode: In warmer weather, PH04 doubles as a fan — circulating cool, humidified air to make the room more comfortable.
Multiple Airflow Settings: It offers several modes: a direct fan mode (with oscillation 0–90°), a “Breeze” mode that mimics a gentle natural airflow, and a “Diffused / Backward airflow” mode for purification/humidification without direct cooling.
Smart Automation & Easy Control
Auto Air Quality Monitoring: Built-in sensors constantly monitor air pollutants (particles, VOCs, formaldehyde), humidity, and other conditions. The device reacts automatically — increasing purification or humidification when it detects poor air.
Real-time Reporting & App Control: With the companion app (and via Wi-Fi), you can monitor air quality, humidity, filter status — and even control the device remotely. Voice-assistant control (e.g. with smart home systems) is also supported.
Night Mode & Sleep Timer: A “quiet / night” mode dims the display and runs the unit at its quietest — useful for bedrooms. You can also set a sleep timer for scheduled shut-offs (15 minutes to 9 hours).
Low-Maintenance Design
Simple Filter & Water Maintenance: Filter replacement alerts appear via the display/app; the filters (HEPA + carbon) are straightforward to swap annually or when prompted.
Deep-Clean Cycle for Water System: To prevent mineral build-up (especially in hard water areas), PH04 includes a built-in deep-clean cycle to rinse and clean the water system.
Quality refurbished by Dyson with a 1 year Dyson warranty
Note: Colour may vary
Dyson refurbished machines are different. Each machine has passed a detailed inspection and hundreds of tests, to meet the same standards as a new machine. Units may have some minor cosmetic blemishes that do not affect functionality. So when Dyson say they're 'like new', they mean it.
Dyson are solely responsible for any concerns with their refurbished units, once opened we are not able to offer any returns or exchanges.
