The Best Air Purifiers for Dust
This is the rare case where the certification tests exactly what you are asking about. Ranked on certified dust CADR, not the smoke figure.
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Rank on certified dust CADR rather than the smoke figure, because dust is tested directly in the CADR standard. The Blueair 211i Max leads at 453 certified dust CFM; the Honeywell HPA6000 gives the best dust CADR per watt at 262 CFM on 34.9 watts.
Almost every buying decision in this category involves a proxy: you want to know about pet dander and the standard measures smoke. Dust is the exception. AHAM’s test uses tobacco smoke, dust and pollen, so if dust is your problem the certification is measuring the exact thing you care about, and it is published per model.
So this page ranks on the dust column. Most roundups quietly use the smoke figure for everything because it is the one AHAM uses to derive room size. For this question that is the wrong column.
Certified dust CADR, ranked
| Unit | Dust CADR | Smoke CADR | Certified room | kWh / yr | Electricity / yr |
|---|---|---|---|---|---|
| Blueair 211i Max | 453 | 435 | 674 sq ft | 256 | $47 |
| LEVOIT Core 600S | 398 | 391 | 606 sq ft | 387 | $71 |
| Coway Airmega 400 | 384 | 376 | 583 sq ft | 366 | $67 |
| Alen BreatheSmart 75i | 351 | 370 | 574 sq ft | 304 | $56 |
| Whirlpool WPPRO2000 | 339 | 341 | 529 sq ft | 657 | $120 |
| Fellowes AeraMax SE | 329 | 323 | 500 sq ft | 392 | $72 |
| Blueair 311i Max | 314 | 283 | 439 sq ft | 193 | $35 |
| Honeywell HPA6000 | 262 | 257 | 398 sq ft | 207 | $38 |
| Winix AT41 | 259 | 265 | 410 sq ft | 272 | $50 |
| Medify Air MA-40 | 257 | 245 | 380 sq ft | 261 | $48 |
| Winix C710 | 252 | 248 | 384 sq ft | 235 | $43 |
| Winix 5500-2 | 244 | 239 | 370 sq ft | 356 | $65 |
| LEVOIT Core 400S | 240 | 231 | 358 sq ft | 237 | $43 |
| Honeywell HPA4300 | 238 | 229 | 354 sq ft | 185 | $34 |
| Blueair DustMagnet 5440i | 231 | 216 | 335 sq ft | 220 | $40 |
Electricity costs on this page use 18.34¢ per kWh, the U.S. average residential price for June 2026 from the U.S. Energy Information Administration, Electric Power Monthly, Table 5.3. Your rate is on your bill and is probably not this one; multiply the kWh figure by your own rate and you have your number.
Quick picks
Ranked on certified Clean Air Delivery Rate against the room size each unit is certified for, then on what it costs to run. Tap any row for the full write-up.
| # | Product | Best for | Certified CADR | Price |
|---|---|---|---|---|
| 1 | No photo Highest certified dust CADR Blueair Blue Pure 211i Max 453 CFM against dust — the highest figure of any unit we cover. | Open-plan spaces above 500 sq ft | 435CFM smoke AHAM VERIFIDE | |
| 2 | No photo Best design for settled dust Blueair DustMagnet 5440i Low intake vents and 231 certified dust CADR, built around the problem. | Settled dust and shed hair | 216CFM smoke AHAM VERIFIDE | |
| 3 | No photo Best dust CADR per watt Honeywell HPA6000 262 certified dust CFM on 34.9 watts, and zero measured ozone. | Large living rooms, true HEPA | 257CFM smoke AHAM VERIFIDE | |
| 4 |  Best mid-size Winix AT41 259 certified dust CFM, no ionizer, 410 certified sq ft. | Pet allergies, whole living room | 265CFM smoke AHAM VERIFIDE | |
| 5 | No photo Best for very large rooms LEVOIT Core 600S 398 certified dust CFM across 606 sq ft — with a 387 kWh bill. | Large open-plan rooms | 391CFM smoke ENERGY STAR verified | |
| 6 |  Skip this one Whirlpool Whispure WPPRO2000 339 certified dust CFM bought with 657 kWh a year. | Skip this one on running cost | 341CFM smoke AHAM VERIFIDE |
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The picks
Blueair Blue Pure 211i Max
Blueair · model 3613111100 (Blue Pure 211i Max)
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The most air per watt of anything here and by some distance the largest certified coverage — 674 square feet. It does carry an ion generator, which is the reason it is not our asthma pick.
435 smoke / 453 dust / 450 pollen CFM · 444 PM2.5
- Certified room size
- 674 sq ft
- Energy / year
- 256 kWh
- Electricity / year
- $47
- Air per watt
- 9 CFM/W
- Power draw
- 44 W
- Noise
- Not published
- Measured ozone
- 2 ppb
- Filter class
- HEPA-Type
Ion generator — fitted
The two registers disagree: AHAM classifies this model 'Fan Filter with Ion Generator' while ENERGY STAR records it as 'Fan and Filter'. ENERGY STAR's measured ozone figure is 2 ppb. We report both rather than picking the flattering one.
453 CFM against dust is the highest certified figure of any machine we cover, and it comes with the largest certified room size — 674 square feet — on 44 watts. As a pure dust machine for a big room, nothing here is close.
AHAM classifies the model as carrying an ion generator while ENERGY STAR records it as fan-and-filter and measures 2 ppb ozone. Both are on the card; we report the disagreement rather than choosing the flattering reading.
Blueair DustMagnet 5440i
Blueair · model 5431112000 (DustMagnet 5440i)
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The only unit here designed around where settled dust actually is — intake vents low on the body rather than on top. Its certified pollen CADR, 274, is its strongest number.
216 smoke / 231 dust / 274 pollen CFM · 227 PM2.5
- Certified room size
- 335 sq ft
- Energy / year
- 220 kWh
- Electricity / year
- $40
- Air per watt
- 5.9 CFM/W
- Power draw
- 37.3 W
- Noise
- Not published
- Measured ozone
- 1 ppb
- Filter class
- HEPA Type and Activated Carbon
Ion generator — fitted
AHAM classifies this model 'Fan Filter with Ion Generator'.
The one machine here designed around dust specifically rather than adapted to it. Intake vents sit low on the body, where settling dust actually is, instead of on top where most purifiers draw from.
231 certified dust CADR and a 274 certified pollen CADR — its strongest number, and pollen is the coarsest particle in the standard. Certified for 335 square feet at $40 a year.
Honeywell HPA6000
Honeywell · model HPA6000B
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More certified air movement than the HPA4300 for four more watts, and the same zero on ozone. The sensible step up if your room is nearer 400 square feet.
257 smoke / 262 dust / 285 pollen CFM · 259 PM2.5
- Certified room size
- 398 sq ft
- Energy / year
- 207 kWh
- Electricity / year
- $38
- Air per watt
- 7.3 CFM/W
- Power draw
- 34.9 W
- Noise
- Not published
- Measured ozone
- 0 ppb
- Filter class
- HEPA
262 certified dust CFM on 34.9 watts is the efficiency winner in this table, and it holds a HEPA classification rather than HEPA-Type. Zero measured ozone, no ionizer.
$38 a year for a machine certified across 398 square feet is the sensible default if your room is a normal living room rather than an open plan.
Winix AT41
Winix · model AT41
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The best-evidenced pick for a pet household: the highest certified smoke CADR of any mid-price unit here, no ion generator, and a measured zero on ozone.
265 smoke / 259 dust / 244 pollen CFM · 261 PM2.5
- Certified room size
- 410 sq ft
- Energy / year
- 272 kWh
- Electricity / year
- $50
- Air per watt
- 5.6 CFM/W
- Power draw
- 45 W
- Noise
- Not published
- Measured ozone
- 0 ppb
- Filter class
- HEPA-Type
No ionizer — filtration only
AHAM classifies this model 'Fan with Filter' — no ion generator, unlike Winix's PlasmaWave line.
259 certified dust CFM, 265 smoke, 410 certified square feet, no ion generator and 0.00 ppb measured ozone. A straightforward, well-evidenced machine with no asterisks.
LEVOIT Core 600S
LEVOIT · model Core 600S (LAP-C601S-WUS)
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391 certified smoke CADR is real large-room capability, and it is honest about needing 387 kWh a year to deliver it — the highest electricity bill of any unit we recommend.
391 smoke / 398 dust / 436 pollen CFM · 394 PM2.5
- Certified room size
- 606 sq ft
- Advertised coverage
- 2,909 sq ft at 1 air change per hour
- Energy / year
- 387 kWh
- Electricity / year
- $71
- Air per watt
- 6 CFM/W
- Power draw
- 49 W
- Noise
- 26-55 dB
- Measured ozone
- 0 ppb
- Filter class
- HEPA-Type
No ionizer — filtration only
ENERGY STAR classifies this unit 'Fan and Filter', 0.00 ppb measured ozone.
398 certified dust CFM across 606 certified square feet is genuine large-room capability, and LEVOIT is honest about what it takes: 387 kWh a year, or $71.
Worth putting next to its own advertised coverage of 2,909 square feet at one air change per hour — the certified figure is 606. Both numbers are on LEVOIT’s page and only one of them describes air purification.
Whirlpool Whispure WPPRO2000
Whirlpool · model WPPRO2000
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Large certified coverage bought with 112.9 watts and 657 kWh a year — roughly triple the electricity of the Honeywell HPA6000 for 33% more air.
341 smoke / 339 dust / 381 pollen CFM · 340 PM2.5
- Certified room size
- 529 sq ft
- Energy / year
- 657 kWh
- Electricity / year
- $120
- Air per watt
- 3 CFM/W
- Power draw
- 112.9 W
- Noise
- Not published
- Filter class
- HEPA
No ionizer — filtration only
AHAM classifies this model 'Fan with Filter'.
339 certified dust CFM is real, and it costs 112.9 watts and 657 kWh a year to produce — $120 annually. The Blueair 211i Max delivers more certified dust CADR for $47.
Dust machines run continuously by definition. That makes this the worst possible category in which to buy the least efficient unit.
Common questions
Do air purifiers actually reduce household dust?
Which CADR number matters for dust?
Will a purifier help with dust mites?
Sources
- AHAM VERIFIDE directory of certified room air cleaners
- ENERGY STAR certified room air cleaners database
- EPA — Guide to Air Cleaners in the Home
Figures were read on the dates shown against each source. If one has changed, or if we have got something wrong, tell us and we will correct the page.
Read next
- Pet hair & odorThe Best Air Purifiers for Pet HairWhy the washable pre-filter decides this category, and the certified units that have one.
- CADR & costCADR comparison chartEvery unit we cover, ranked by certified CADR, with the verifying register named for each.
- AllergiesAllergen particle sizes, explainedWhere each common allergen sits by particle size, and why 0.3 microns is the hardest case rather than the smallest.