Dyson Purifier Cool vs Smart Air QT3 Portable Air Purifier
Side-by-side comparison of features, pricing, ratings, and alternatives.
The Dyson Purifier Cool combines a bladeless fan with a fully sealed HEPA H13 and activated carbon filtration system, capturing 99.95% of particles as small as 0.1 microns while also cooling the room using Dyson's Air Multiplier technology. A built-in laser particle sensor continuously monitors air quality and automatically adjusts purification intensity, displaying real-time pollutant levels including PM2.5, PM10, VOCs, and NO2 on the LCD screen or the Dyson Link app. Auto mode reacts to changing air quality throughout the day, while Night Mode dims the display and runs at a quieter airflow setting for undisturbed sleep, and the bladeless design is safer around children and pets than traditional fan blades.
The QT3 is Smart Air's portable purifier, designed to go where the person goes rather than sit in one room. It targets hotel rooms, shared offices, study spaces and travel, where ventilation quality is outside your control and a full-size purifier is impractical. The company positions it as whisper-quiet, which is the deciding factor for a device meant to run beside a bed or a desk. Smart Air is a certified B Corp with an unusual approach to the category: it publishes open-source clean air research and runs clean air workshops, positioning itself against purifier marketing that relies on unverifiable claims. The QT3 uses a replaceable EPA filter, and Smart Air sells carbon and HEPA or EPA filters across its range including the Sqair, SA600, Blast Mini and Blast models.
Around $549.99 MSRP.
- Genuinely dual-purpose (cooling + purifying)
- Effective, sealed HEPA filtration
- Useful real-time air quality data
- Safer bladeless design
- Small and quiet enough to run beside a bed all night
- Backed by published, open-source air quality research
- Filters are sold directly and are straightforward to replace
- B Corp certification signals verified operating standards
- Premium price versus separate fan + purifier
- Replacement filters add ongoing cost
- Less powerful cooling than a dedicated large fan
- A portable unit covers a personal zone, not a whole room or house
- Filter replacement is an ongoing cost
- Availability varies by region through local ordering
What reviewers say
Dyson Purifier Cool Reviews
4.7 (3)Does exactly what we need
Been a regular user of Dyson Purifier Cool for a while now. Safer bladeless design. One minor gripe: premium price versus separate fan + purifier, but it hasn't been a dealbreaker. Would recommend.
Highly recommend Dyson Purifier Cool
Been a regular user of Dyson Purifier Cool for a while now. Effective, sealed HEPA filtration. No major complaints so far. Would recommend.
Highly recommend Dyson Purifier Cool
I picked up Dyson Purifier Cool a while back and haven't looked back. Effective, sealed HEPA filtration. No major complaints so far. Would recommend.
Smart Air QT3 Portable Air Purifier Reviews
No reviews yet.
More alternatives & similar tools
Alternatives to Dyson Purifier Cool
View all →
Alternatives to Smart Air QT3 Portable Air Purifier
View all →No alternatives listed yet. Browse similar tools →
The Verdict
AI-generated from listing dataDyson Purifier Cool offers dual cooling‑purifying with smart monitoring at a premium price, while Smart Air QT3 is a low‑cost, quiet portable purifier for personal spaces.
Key differences
- •Dyson combines fan and purifier; QT3 is purifier‑only.
- •Dyson provides real‑time air‑quality data via app; QT3 has no smart connectivity.
- •Dyson’s cooling power is limited compared to dedicated fans; QT3 covers only a personal zone.
- •Dyson’s price (~$550) is higher; QT3 price not specified but implied lower.
- •QT3 emphasizes open‑source research and B‑Corp status; Dyson does not.
Pricing & value
Dyson costs around $549.99; QT3 price not listed but marketed as affordable, making QT3 likely cheaper.
Capacity (room coverage)
Dyson designed to cool and purify a whole room; QT3 is a personal‑zone portable unit.
Energy efficiency & running cost
Dyson requires filter replacements and higher power for fan; QT3 has no fan and unspecified filter cost, likely lower running cost.
Noise level
QT3 described as whisper‑quiet; Dyson has Quiet Night Mode but still a fan, so likely louder.
Size & footprint
QT3 is portable and small; Dyson is a larger tabletop device.
Features
Dyson offers HEPA H13 filtration, carbon filter, laser sensor, app integration, Alexa/Google control; QT3 lacks smart features.
Ease of cleaning / maintenance
QT3 filter sold directly and described as straightforward to replace; Dyson filters are sealed and replaceable but at premium cost.
Choose Dyson Purifier Cool if…
Allergy‑sufferers who want whole‑room cooling plus smart air‑quality monitoring.
Choose Smart Air QT3 Portable Air Purifier if…
Travelers or office workers needing a quiet, portable purifier for a personal space.
Common questions
Does either unit provide real‑time air‑quality monitoring?
Only the Dyson Purifier Cool includes a laser sensor and app reporting; QT3 has no smart connectivity.
Which is quieter for nighttime use?
The Smart Air QT3 is marketed as whisper‑quiet; Dyson has a Quiet Night Mode but still operates a fan.
What are the ongoing filter costs?
Both require replacement filters; Dyson’s sealed HEPA H13 filters are premium and add cost, while QT3’s EPA filters are sold directly but cost not specified.