Dyson sells one machine that purifies the air, adds humidity and blows a cool breeze. It costs $799.99. The honest question is not whether it works. It is whether one appliance is better than two cheaper ones.
The Dyson Purifier Humidify+Cool PH2 De-NOx is listed at $799.99 on Amazon with 3.5 stars from 81 ratings. The older PH03 is $499.99 at 3.3 stars. Here is what the PH2 offers and what else the money could buy.
Table of Contents
Dyson PH2 at a glance
| Feature | Details | Price |
|---|---|---|
| Dyson Humidify+Cool PH2 De-NOx | 3-stage sealed HEPA H13 filtration, evaporative humidifier, fan, formaldehyde breakdown, app control, 350-degree oscillation | ~$799.99 |
Prices checked October 2026 and change often.
What the listing promises
- A fully sealed, 3-stage HEPA H13 filter that captures 99.97 percent of particles as small as 0.3 microns.
- Capture of more nitrogen dioxide than the standard model, per Dyson’s claim.
- Continuous breakdown of formaldehyde, per the listing.
- Water treated to remove 99.9 percent of bacteria before humidifying, per Dyson.
- App control, schedules and air quality reports through MyDyson.
- A cooling fan that oscillates up to 350 degrees.
These are maker claims. Treat them as a starting point, not independent proof.
Looking ahead, expect 3-in-1 machines to get cheaper and more sensors to appear, including gas and VOC readings. The risk is that fast model changes leave owners with filters and parts that are hard to find later.
Humidity is not a free win
The EPA says indoor humidity should stay at or below 50 percent, with 30 to 50 percent a good range, because damp air feeds mold and dust mites. A humidifier built into your air purifier is only helpful if you can control it. Check the room with a cheap hygrometer rather than trusting a display alone.
What else $800 could buy
A Levoit Core 300 purifier costs $89.99 and the HUME Sense humidifier costs $119.99. That is $209.98 for two machines. Add a $70 tower fan and the total is still far under one Dyson. See the HUME Sense review and our CADR-based purifier picks.
| Setup | What it covers | Price |
|---|---|---|
| Dyson PH2 De-NOx | Purifier, humidifier and fan in one body | ~$799.99 |
| Levoit Core 300 | Purifier only | ~$89.99 |
| HUME Sense | Humidifier only | ~$119.99 |
Prices checked October 2026 and change often.
Who should skip it
- Anyone who wants the cheapest clean air.
- Rooms bigger than the unit can handle. Check the listing and compare it with CADR numbers.
- People who dislike regular upkeep of a water tank.
- Households that want a real air conditioner.
The catch: with an 81-rating, 3.5-star score, early owners are the main evidence. Read recent reviews on filters, the app and humidifier upkeep, and check the return window before you buy.
Who should buy it
- Buyers who value one tidy, app-controlled machine and have the budget.
- Small apartments with little floor space.
- People who dislike juggling several devices.
Skip it if the goal is the cheapest clean air. The Dyson AM10 review and our humidifier buying guide show lower-cost routes.
Upkeep to budget for
- Replacement filters, which Dyson recommends changing on a schedule.
- Regular descaling and cleaning of the water tank and evaporator.
- A hygrometer to check real humidity, since a display can lag.
Pros and cons
| Pros | Cons |
|---|---|
| Sealed HEPA H13 filter, 99.97% at 0.3 microns per the listing | Priced at $799.99, many times a separate purifier and humidifier |
| One body for air cleaning, humidity and a cooling fan | Only 81 ratings and 3.5 stars on Amazon |
| App control and air quality reports | Humidifier upkeep and filter cost add up |
| Evaporative humidifier, which avoids the white dust of ultrasonic models | Not an air conditioner |
On that white dust point: ultrasonic humidifiers can leave a film of minerals on furniture. Our guide to why a humidifier leaves white dust explains why, and why an evaporative design avoids most of it.
Is it worth it?
It is worth it for buyers who value design, one-machine simplicity and app control, and who have the budget. For everyone else, a separate purifier and humidifier cleans more air and costs far less. The older PH03 at $499.99 is a cheaper way into the same family, but its 3.3-star rating from 54 ratings is a caution.
What may help: wait for a sale, or check whether last year’s model is still in stock at a lower price. Compare the filter cost before you buy. Expect Dyson to refresh the line every year or two, which tends to push older prices down.
Frequently asked questions
Does the Dyson PH2 cool a room? It uses a fan, so it moves air and feels cooler on your skin. It is not an air conditioner.
Is the humidifier part worth it? Only if the air is dry and you can keep humidity between 30 and 50 percent.
Why is the rating only 3.5 stars? Amazon shows 81 ratings, which is a small group. Read recent reviews for filter and humidifier upkeep complaints.
Sources
- Dyson Purifier Humidify+Cool PH2 De-NOx and PH03 Amazon listings (checked October 2026)
- Levoit Core 300 and HUME Sense Amazon listings (checked October 2026)
- U.S. Environmental Protection Agency, A Brief Guide to Mold, Moisture and Your Home
