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Deal.ai › Dyson › Air Purifiers
Dyson
Dyson Purifier Humidify+Cool Formaldehyde PH04

Dyson Purifier Humidify+Cool Formaldehyde PH04

3.5(2,000 ratings)

Best price now

$299.99at WalmartChecked Nov 9

Compared across 7 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Last seen at $299.99 at Walmart on Nov 9.
  • Checked at 7 stores.

Our take on the Dyson Purifier Humidify+Cool Formaldehyde PH04

The PH04 is a three-in-one floor unit that purifies, humidifies and circulates air, and adds a solid-state formaldehyde sensor plus a catalytic filter that breaks formaldehyde down rather than only trapping it. Its fully sealed HEPA and carbon filtration, UV-C humidifier treatment and Air Multiplier airflow are the features that separate it from cheaper purifier-only rivals. It suits people in dry homes who want one machine for particles, gases and humidity, and who will use the app and voice controls. Owners praise the air quality and humidifying in winter but report a loud fan at higher speeds, fussy maintenance and reliability complaints, which is why its ratings sit around the middle.

Best forDry homes that also need particle and gas filtrationAllergy sufferers who want sealed HEPA filtrationSmart-home users with Alexa or Google AssistantBedrooms and living rooms where one unit must do several jobs
Pros
  • True three-in-one: purifies, humidifies and cools with airflow
  • Sealed filtration path keeps captured particles inside the machine
  • Catalytic filter continuously destroys formaldehyde instead of storing it
  • HEPA captures 99.97% of particles down to 0.3 microns
  • UV-C treatment of humidifier water limits bacterial growth
  • App, remote, Alexa and Google Assistant control
Cons
  • Fan noise is noticeable at medium and high speeds
  • Humidifier needs regular cleaning and descaling
  • Large, heavy floor unit that takes up space
  • Reliability complaints appear in owner reports
  • Filters and maintenance add ongoing cost

Dyson Purifier Humidify+Cool Formaldehyde PH04 prices at every store

  • WalmartNew

    In stockSold by Dyson, Inc.

    $299.99Checked Nov 9
    Visit Walmart
  • ShopSimonNew

    In stock

    $329.99Checked Nov 9
    Visit ShopSimon
  • Back MarketRefurbished

    In stock

    $329.99Checked Nov 9
    Visit Back Market
  • eBayRefurbished

    In stockSold by dysonofficial

    $374.99Checked Nov 9
    Visit eBay
  • Dyson OfficialRefurbished

    In stock

    $699.99Checked Nov 9
    Visit Dyson Official
  • Newegg.comRefurbished

    In stockSold by Dyson

    $699.99Checked Nov 9
    Visit Newegg.com
  • eBayPre-owned

    Availability unknownSold by yfllc1 (99.4% positive, 6,200 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $189.99+ $51.95 shippingChecked Nov 9
    Visit eBay

Store links may earn us a commission.

Dyson Purifier Humidify+Cool Formaldehyde PH04 price history

Lowest price we've seen: $299.99 on Nov 9 at Walmart. Tracked across 2 stores since Nov 9.

What reviewers say

  • 3.5 / 52,000 ratings

Owners like the air quality and winter humidification and find the app and auto mode convenient. Complaints centre on noise at higher fan speeds, humidifier upkeep and units that developed faults.

What people mention
  • NoiseCriticisedOwners say the fan becomes loud once it moves above the lowest speeds, which matters at night.
  • HumidificationPraisedUsers in dry climates report less dry air and fewer static and skin problems in winter.
  • MaintenanceCriticisedThe water tank and humidifier parts need frequent cleaning and descaling to stay hygienic.
  • Air qualityPraisedReviewers notice less dust and fewer allergy symptoms with the unit running continuously.
  • ReliabilityCriticisedSome owners report faults and sensor errors within the first year or two.
  • SizeMixedThe tall body projects air well but takes up floor space and is awkward to move between rooms.

About the Dyson Purifier Humidify+Cool Formaldehyde PH04

The latest generation 3-in-1 Dyson Purifier Humidify+Cool Formaldehyde™ combines intelligent sensing with an advanced filtration and humidification system to purify, humidify, and cool you. Three phases of purification sit within a fully sealed filtration and airflow system. So what goes inside, stays inside. A solid-state formaldehyde sensor and a unique catalytic filter detect and continuously destroy formaldehyde¹, a HEPA filter³ captures 99.97% of particles 0.3 microns⁶ in size. Then powerful Air Multiplier™ technology projects purified, hygienically humidified air throughout the room.² For a healthier, more comfortable environment. ¹Third party full machine testing based on GB/T 18801-2015. Results may vary in practice. ²Tested for air projection (DTM801) and humidification (TM-002110). ³Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. ⁴Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply. Refer to the MyDyson™ app for compatible voice services. ⁵At fan speed 1. ⁶Tested per ISO 29463 ⁷Fan; not air conditioning unit In the box: Remote Control.

Specifications

Assistant Support
Google Assistant, Amazon Alexa
actual_color
White/GoldSource
color
GoldSource
size
1Source

Questions and answers

Does the PH04 really remove formaldehyde?
It has a solid-state formaldehyde sensor and a catalytic filter that continuously breaks the gas down. Dyson's testing is third-party and results vary with room conditions, but the sensor lets the machine react when levels rise.
How is it different from the PH03?
The PH04 adds the formaldehyde sensor and catalytic filter. Purification, humidification and airflow are otherwise the same three-in-one design.
Do I have to use the humidifier?
No. You can run it as a purifier and fan only. Humidification is separate, so you can switch it off in humid months.
Does it work with Alexa and Google Assistant?
Yes, both are supported through the MyDyson app, along with the included remote. You need Wi-Fi and the app for voice control.
What comes in the box?
The machine and a remote control. Filters are pre-installed; the humidifier tank is part of the unit.
Is it an air conditioner?
No. It circulates air and can feel cooling, but it does not refrigerate or lower room temperature like an AC.
Where is the Dyson Purifier Humidify+Cool Formaldehyde PH04 cheapest?
At Walmart, for $299.99, as of our latest check.
What do buyers say about the Dyson Purifier Humidify+Cool Formaldehyde PH04?
Rated 3.5 out of 5 from 2,000 ratings.
Where can I buy the Dyson Purifier Humidify+Cool Formaldehyde PH04?
6 stores we checked sell it, including eBay, Walmart, ShopSimon, Back Market, Dyson Official.

Stores we've priced the Dyson Purifier Humidify+Cool Formaldehyde PH04 at

  • ShopSimon deals and prices
  • Walmart deals and prices

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