Dyson Purifier Humidify+Cool Formaldehyde PH04, air purifier and humidifier

Dyson Purifier Humidify+Cool Formaldehyde PH04 - 40 W Airflow

Published on 09/21/2026 at 16:00 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Dyson Purifier Humidify+Cool Formaldehyde PH04 uses a 40 W system and HEPA H13 sealing. Best Buy listed the model with SKU 6484002.

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Dyson Purifier Humidify+Cool Formaldehyde PH04 adds humidifying and cooling to air purification in a 36.3-inch tower. Dyson says it detects and destroys formaldehyde, and the unit is fully sealed to HEPA H13 standard.

Core Design And Filtration

The model page lists a HEPA filter that captures 99.97% of particles 0.3 microns in size, plus a catalytic filter that destroys formaldehyde. Dyson also says Air Multiplier technology projects purified, humidified air throughout the room.

Dyson describes the deep clean cycle with a citric acid cleaning kit, and says the MyDyson app needs Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS 10 or Android 5 and above. Those app requirements matter as much as the air-care hardware for daily control.

Model, Size, And Warranty

Best Buy listed the PH04 as model 369207-01 and SKU 6484002, and called the item no longer available in new condition. A second retailer listing gives the unit a 40 W power draw, 923 mm height, and 12-month filter life.

The same spec sheet lists a 2-year warranty and 350 l/s airflow at maximum setting. Dyson's product page also says the machine projects purified humidified air throughout the room, which fits the purifier-humidifier-fan format.

Direct from the Manufacturer

Dyson Purifier Humidify+Cool Formaldehyde PH04

Dyson's official product page collects the key functions, filtration claims, and app requirements in one place.

Open Dyson's PH04 Page

Price And Positioning

Best Buy showed the PH04 in White/Gold with a 4.3-star rating from 445 reviews, but the new-condition listing is no longer active. A comparison page indexed current US prices from $829.00 to $845.99 for the PH04.

That places the PH04 in the premium air purifier and humidifier tier, with formaldehyde destruction as the headline distinction. For buyers comparing it with a standard purifier, the added humidification and the 2-year warranty are the clearest differentiators.

Verdict For Room Care

The PH04 fits rooms that need purification and humidification in one tower, plus app control and a sealed HEPA H13 system. Its 923 mm height, 40 W rating, and 350 l/s airflow define a large, floor-standing appliance rather than a compact desktop unit.