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    Health & WellnessHumidifierDyson Purifier Humidify+Cool Formaldehyde PH04
    #2 of 6
    Dyson Purifier Humidify+Cool Formaldehyde PH04

    Key Specs

    Humidifier Type

    Moisture Output

    Coverage Area

    Tank Capacity

    Dyson

    Dyson Purifier Humidify+Cool Formaldehyde PH04

    #2 of 6 humidifiers tested

    No sponsored placements·By Renée Torres
    7.8R3 Score / 10
    RecommendedGood, with trade-offs worth knowing.
    No sponsored placements· By Renée Torres

    The bottom line

    What the product listing won't tell you

    Know before you buy

    The Dyson PH04 is the most feature-complete air quality device in this category — evaporative humidification, UV-C water sterilization, humidistat, HEPA H13 air purification, and formaldehyde destruction all in one machine. The tradeoffs are real: 62.4 dB makes it unsuitable for sleep environments, the tank is unspecified plastic with no BPA-free confirmation, and the $999 price is in a category of its own.

    Buy it if
    Dyson Purifier Humidify+Cool Formaldehyde PH04

    Dyson

    Dyson Purifier Humidify+Cool Formaldehyde PH04

    $999.99
    See if it passed our safety test for freeBuy
    Dyson Purifier Humidify+Cool Formaldehyde PH04

    Dyson

    Dyson Purifier Humidify+Cool Formaldehyde PH04

    $999.99Buy on Amazon
    Safety
    Efficacy
    Usability
    Unlock safety scores for free

    $999.99

    Buy on Amazon

    We may earn a commission. It doesn't affect our scores.

  1. You want the gold standard in clean humidification: evaporative technology, UV-C sterilization, and an auto-humidistat in one device.

  2. You also need a full air purifier with HEPA H13 filtration and formaldehyde destruction for your living space.

  3. You run it in an open-plan or large room during the day, not in a bedroom or nursery overnight.

  4. The $999 price is within your budget and you want everything handled by one device.

  5. You are comfortable with hand-washing and a monthly citric acid descale routine.

    6. Skip if

    • You need a quiet humidifier for a nursery or bedroom — 62.4 dB will disrupt sleep.

    • The unspecified plastic tank (no BPA-free confirmation from Dyson) is a dealbreaker for your family.

    • You are looking for strong price-to-value — this is a luxury purchase.

    What's inside

    Specs the product listing doesn't explain

    Safety & Materials

    What your food and family come into contact with every use

    Dishwasher SafeTank Material
    Efficacy

    What determines how well this performs its core job

    Tank Capacity
    Usability

    Ease of use, maintenance, and longevity

    Humidifier TypeMoisture OutputCoverage Area

    See exactly what's in this humidifier

    Free account unlocks full material breakdown, safety test results, and spec details.

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    How we scored it

    3 criteria - open any layer to see exactly what we found

    Safety

    Efficacy

    Usability

    SafetyCritical

    “Will this humidifier put anything harmful into my family's air or water?”

    ▾

    The scoring rationale is locked

    Free account unlocks exactly why this product scored the way it did.

    See the full scoring for free

    Criteria

    Where to buy

    Verified retailer - current pricing

    Starting price

    $999.99

    R3 approved retailer Score unaffected by purchase
    Buy on Amazon

    We earn a small commission on purchases. It never influences our scores - R3 is funded by readers, not brands.

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    #2 of 6 humidifiers reviewed

    Did the Dyson Purifier Humidify+Cool Formaldehyde PH04 pass our safety screen?

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    Noise Level (max)
    Filter Type
    UV Sterilization
    Humidistat
    Auto Shutoff
    Price (MSRP)
    Humidifier Technology Type
    Built-in Humidistat / Auto Humidity Control
    Requires Chemical Tank Additives
    Auto Shutoff When Tank Empty
    UV Water Sterilization
    Dishwasher-Safe Water-Contact Components
    Demineralization Filter
    Water Tank Material
    EfficacyImportant

    “Will this humidifier actually keep a room at the right humidity level?”

    ▾

    The scoring rationale is locked

    Free account unlocks exactly why this product scored the way it did.

    See the full scoring for free

    Criteria

    Moisture Output RateRated Coverage Area
    UsabilityNice to have

    “Is this easy to live with day to day — noise, tank refills, and cleaning?”

    ▾

    The scoring rationale is locked

    Free account unlocks exactly why this product scored the way it did.

    See the full scoring for free

    Criteria

    Operating Noise LevelFilter TypeTank Capacity
    R3 (Research, Reviews, Recommendations)

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