Comprehensive Dyson Purifier Humidify+Cool PH04 Review

The Dyson Purifier Humidify+Cool PH04 is a versatile air purifier, humidifier, and fan that claims to improve air quality and comfort.

In this review, we’ll explore the features, benefits, and drawbacks of this all-in-one unit. We’ll also compare it with other similar products in the market and share our personal experience.

Our review offers a unique perspective on the PH04’s performance and value proposition.

Keep reading to discover if this product is worth your investment.

Dyson's Legacy in Home Appliances

Beginning its journey as a floor-care brand in 1991, Dyson quickly emerged as a pioneer with its revolutionary cyclone air technology. Its commitment to innovation, top-tier quality, and unmatched customer service has propelled it into various segments of home products, including air-quality devices like the PH04.

Features and Specifications of the PH04

Multifunctionality in One Unit

The Dyson PH04 stands out with its threefold functionality:

  • Purifying: With its AutoReact technology, it can sense, capture, and neutralize pollutants, ensuring a cleaner and more breathable atmosphere. Significantly, it has the prowess to detect and neutralize formaldehyde, a common pollutant emitted from wood flooring and fabrics.
  • Humidifying: Equipped to add the necessary moisture to indoor spaces, it helps combat the effects of dry air which can often be detrimental to our health and homes.
  • Cooling: Serving as a fan, the unit ensures you stay comfortable during warm days or when you need a refreshing breeze.

Advanced Design and Usability

The device is user-friendly and designed with mobility in mind. At 18 pounds and integrated with wheels, the Dyson PH04 can be relocated with ease. Its 90-degree-angle oscillation ensures air reaches every corner of the room. Despite its comprehensive features, the unit occupies minimal space, making it a perfect fit even in compact rooms.

Advanced Filtration System

The Dyson PH04 is engineered with a fully sealed HEPA H13 standard filter. Its unique Air Multiplier technology ensures that purified and humidified air is evenly distributed throughout the room.

Erin Lawrence

Smart Controls

The PH04’s sophisticated design is accompanied by its intelligent control features. Users can choose from three distinct settings:

  • Fan Mode: Direct cooling with adjustable oscillation degrees.
  • Breeze Mode: Imitates the feel of a natural breeze.
  • Backward Airflow Mode: Allows purification and humidification without cooling.

Furthermore, the device integrates seamlessly with voice assistants like Amazon Alexa, Siri, and Google Assistant, and can be managed using simple voice commands. The device is also bundled with a magnetic remote control, offering convenience at your fingertips.

Real-world Performance

Handling Air Quality Spikes

During our test phase, we observed the PH04's exceptional response to deteriorating air quality. For instance, when household activities like hair drying or cooking released pollutants into the air, the device instantly shifted gears, ensuring the ambient air returned to optimal quality swiftly.

Humidifying Efficiency

In spaces with exceedingly dry air, the PH04 demonstrated its capability to swiftly adjust humidity levels. Within a couple of hours, it could modify a room's humidity by nearly 20%, proving its efficiency and speed.

Handling External Pollution

Our tests coincided with external environmental challenges, such as the unfortunate influx of wildfire smoke. The PH04 consistently worked to ensure the indoor air quality remained at acceptable levels, even when external conditions deteriorated. Its prompt reaction to the smoke and the resultant air purification was genuinely commendable.

Value for Money: Is the Investment Justified?

While the Dyson Purifier Humidify+Cool Formaldehyde PH04 is positioned at a higher price range, we believe its functionalities, performance, and durability offer a justified return on investment. Especially for those who prioritize air quality and seek a multi-purpose device, the PH04 emerges as a robust choice.


After an exhaustive review, we can affirmatively state that the Dyson Purifier Humidify+Cool Formaldehyde PH04 is a worthy addition to any modern home. It adeptly addresses the trifecta of purifying, cooling, and humidifying, all while ensuring user convenience and efficiency. If you're in the market for an all-in-one air management solution, this might just be the perfect pick for you.

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