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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Choose based on the exact model and what you need it to do. In RTINGS’ comparison of the Dyson Purifier Cool PC1 and Blueair Blue Signature Small, the Blueair delivered more particle-cleaning airflow, including at a noise level of 45 dBA or less. The Dyson’s case is its purifier-and-fan design and included remote. For a standalone purifier, TechRadar’s 2026 guide names the Coway Airmega 100 as a budget pick. None of these results makes one brand the universal winner.
Which purifier should you buy?
- Choose the Dyson Purifier Cool PC1 if you value a device that also works as a fan, want a remote, and are comfortable with the lower particle-delivery figures reported for it in this specific comparison.
- Choose the Blueair Blue Signature Small if particle delivery and quieter operation matter more than a fan function, based on RTINGS’ measurements of these two models.
- Consider the Coway Airmega 100 if you want a standalone, budget-oriented option. TechRadar lists it at 240 m³/h CADR; that figure is not a direct comparison with RTINGS’ PM1.0 measurements for the Dyson and Blueair.
Room size, acceptable noise, and the pollutants you want to address should decide between specific models—not the brand name alone.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Dyson Purifier Big+Quiet Formaldehyde BP03 | Buy on Amazon | |
| 2 |
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Dyson Purifier Cool PC1, HEPA Air Purifier Tower Fan, App and remote controlled, 350° oscillation,... | $399.99 | Buy on Amazon |
| 3 |
|
Dyson Purifier Cool PC2 De-NOx | $699.99 | Buy on Amazon |
| 4 |
|
Dyson Purifier Hot+Cool HP1 | $499.99 | Buy on Amazon |
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What the direct Dyson-versus-Blueair measurements show
RTINGS compared the Dyson Purifier Cool PC1 with the Blueair Blue Signature Small. Its reported figures are model-specific PM1.0 clean-air delivery measurements, not a verdict on every Dyson or Blueair purifier.
| Measurement in RTINGS comparison | Dyson Purifier Cool PC1 | Blueair Blue Signature Small |
|---|---|---|
| PM1.0 CADR at maximum fan speed | 128 m³/hour | 290 m³/hour |
| PM1.0 CADR at or below 45 dBA | 82 m³/hour | 170 m³/hour |
| Recommended room size at maximum | 11.0 m² | 24.7 m² |
| Features noted by RTINGS | Fan function and remote control | Ionization is included and cannot be disabled |
RTINGS judged the Blueair stronger for particle filtration and quieter, while identifying the Dyson’s fan function and remote as advantages. The measurements do not establish equivalent performance in every room or operating condition, nor do they show that all Blueair models outperform all Dyson models. See RTINGS’ comparison of the two models.
#1 Best Overall
- Large format purifier with HEPA H13 grade filtration.
- Projects air over 32 feet and purifies large spaces.¹
- Detects and destroys formaldehyde, permanently.³
- Control and monitor your air quality from anywhere using the MyDyson app.⁵
- HEPA H13⁴ grade filter is 3.8x larger than previous generation and lasts up to 5 years.
Match room size and cleaning rate
A maximum room-area recommendation is not enough on its own: the relevant question is how quickly a purifier can clean air in your room at a setting you can tolerate. In the RTINGS comparison, the Blueair’s recommended area at maximum was 24.7 m², compared with 11.0 m² for the Dyson PC1. Those recommendations belong to these tested variants and should not be generalized to other models.
Before buying, compare the exact unit’s recommended room area, CADR, and air changes per hour, and check the assumptions behind the room claim. Blueair’s US product comparison page lists practical comparison categories including room size, energy use, sound, air changes per hour, CADR, sensors, and filter-replacement indicators; it is a shopping checklist, not evidence of cross-brand superiority. Blueair’s US model comparison.
Balance noise against particle cleaning
A purifier may deliver more clean air at its highest setting, but that setting may be too loud for sleep or continuous use. RTINGS reported PM1.0 CADR at or below 45 dBA as 82 m³/hour for the Dyson PC1 and 170 m³/hour for the Blueair Blue Signature Small. This provides a like-for-like reference for those models; it does not mean either will sound identical in every room or at every distance.
Rank #2
- The fully sealed filter system combines an Activated carbon filter to remove gases with a HEPA filter that captures 99.97% of microscopic allergens² and pollutants as small as 0.3 microns.¹
- The whole purifier, not just the filtration system, is fully sealed to HEPA H13 grade – so what goes inside, stays inside.³
- Dyson Air Multiplier technology projects over 76 gallons per second of smooth, yet powerful airflow⁷ to cool you in summer.⁶
- Captures 97% of odors such as cooking odors, pet odors and smoke.⁸
- Control and monitor air quality from anywhere using the MyDyson app, or hands-free with compatible voice services.⁵
If noise is a deciding factor, compare sound ratings at the fan speed you expect to use rather than relying only on the maximum CADR. A purifier used comfortably for longer periods may better suit your routine than one you routinely turn down or switch off.
Separate filtration from extra functions
Dyson: purifier plus fan
The PC1’s fan function and remote are concrete reasons to consider it if you want one device to circulate air as well as filter it. Dyson also says its purifiers capture 99.95% of particles as small as PM0.1, use a vacuum-sealed HEPA filter, monitor and respond to indoor air quality in auto mode, and project purified air using Air Multiplier technology. These are manufacturer claims; check the exact model and market listing before assuming every feature applies to the unit you are considering. Dyson’s purifier descriptions.
Standalone alternatives: prioritize the purifier’s job
A standalone purifier does not provide the Dyson PC1’s fan function simply because it cleans air. TechRadar’s 2026 buying guide names the Blueair Blue Pure 411i Max as its pick for most people (called Blueair Blue Max 3250i in the UK) and Coway Airmega 100 as a budget option. It lists the Coway at 240 m³/h CADR and describes a pre-filter, True HEPA filter, and deodorization filter. These are editorial selections and specifications in that guide, not a controlled head-to-head result against the PC1. TechRadar’s 2026 air-purifier guide.
Rank #3
- Advanced air purification automatically captures 50% more NO₂.⁸
- Fully sealed, 3-stage HEPA H13 grade filtration captures 99.97% of particles as small as 0.3 microns.³
- Removes odors and gases,¹ and continuously destroys formaldehyde.⁹
- Dyson Air Multiplier technology projects over 76 gallons per second of smooth, yet powerful airflow⁷ to cool you in summer.⁶
- Control and monitor air quality from anywhere using the MyDyson app, or hands-free with compatible voice services.⁵
Other 2026 editorial picks differ: The Independent’s UK-oriented guide names Dyson HushJet Compact overall, Coway Airmega 50 for budget, Coway Airmega 350 for large rooms, and Blueair Blue Mini Max for small rooms. Its rankings are useful for identifying models to compare, but UK availability and prices do not automatically apply elsewhere. The Independent’s 2026 guide.
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Check what pollutants you want to remove
Particle filtration and gas or odor removal are different tasks. Check the filter type and any gas-removal claim for the exact model rather than treating a particle-capture percentage as proof of odor or gas performance. The Coway Airmega 100’s filter description in TechRadar, for example, includes a deodorization filter alongside its pre-filter and True HEPA filter; that description alone does not establish how much of a particular gas it removes.
Dyson argues that CADR measures how quickly airborne particle counts decrease but does not test filtration quality or distinguish particle sizes, and says particles that are not captured may return to the room. That is the company’s position, not independent proof that its products outperform CADR-tested rivals. Its explanation of POLAR testing says it is intended to assess whole-room purification; Dyson also describes a CADR chamber as 28.5 m³ with one sensor. These are manufacturer-authored explanations and do not independently settle which test method is more valid. Dyson’s explanation of CADR and Dyson’s explanation of purifier testing.
Rank #4
- The fully sealed filter system combines an Activated carbon filter to remove gases with a HEPA filter that captures 99.97% of microscopic allergens² and pollutants as small as 0.3 microns.¹
- The whole purifier, not just the filtration system, is fully sealed to HEPA H13 grade – so what goes inside, stays inside.³
- Dyson Air Multiplier technology projects over 76 gallons per second of smooth, yet powerful airflow⁷ to cool you in summer,⁶ and heat a whole room evenly in winter.⁴
- Captures 97% of odors such as cooking odors, pet odors and smoke.⁸
- Control and monitor air quality from anywhere using the MyDyson app, or hands-free with compatible voice services.⁵
For a filter-based purifier, Imperial College London associate professor in environmental fluid mechanics Henry Burridge told The Independent: “If I was buying an air purifier, I would only stick to a filter-based air purifier.” The same passage says he would also look for CADR through the filter system.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare models before buying
- Confirm the exact model and market. Model names and variants can differ between countries. Check that the product page and independent comparison refer to the same unit you can buy.
- Set your room requirement. Compare the recommended area and air-cleaning rate against your room, rather than treating a maximum coverage claim as a guarantee of a particular cleaning speed.
- Choose a realistic noise setting. Look for CADR and sound information at the fan speed you expect to run, especially for a bedroom or continuous use.
- List the functions you will use. Decide whether you need a fan, app controls, sensors, or an air-quality display, and distinguish those conveniences from filtration performance.
- Check filter replacement details. Verify the compatible replacement-filter part number, current availability, and cost for your exact model and country. Do not assume filters fit across models or brands.
- Review the target pollutant. Check whether the product addresses particles, odors, or specific gases, and look for a claim that names the relevant filter media or test.
When a manufacturer’s additional claims are model-specific
Dyson’s Big+Quiet BP04 page describes 32 feet of projection and 56 decibels of operation, and identifies a BP04-specific CO2 sensor. It also says the BP04 removes three times more NO2 than a previous Dyson carbon filter, with qualifications in the manufacturer’s footnotes. These details should not be transferred to the Purifier Cool PC1, PC3, or other Dyson models. Dyson Big+Quiet BP04 product information.
Likewise, The Independent reports that its reviewer’s candle-smoke test of the Dyson HushJet Compact reduced PM0.3 and PM2.5 by around 75% within 15 minutes and brought levels close to undetectable after 30 minutes. That is a reviewer-reported test, not a lab-certified outcome or a controlled head-to-head comparison with the PC1 or Blueair model. Tom’s Guide says a demanding test of the Dyson Find+Follow Purifier Cool PC3 took half an hour to move readings from severe to good; its account does not provide a controlled equivalent comparison, so it cannot establish a direct ranking. Tom’s Guide’s PC3 review.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
