Best air purifiers for smoke, ranked by certified smoke CADR

Updated 2026-11-01 · 10 products compared on 3 measured criteria

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Smoke particles are the smallest of the three particle types air purifiers are tested on, so smoke CADR (clean air delivery rate) is the best single number for wildfire smoke or indoor smoke. These 10 models have the highest certified smoke CADR among 204 zero-ozone ENERGY STAR air purifiers (data retrieved 2026-11-01). The top overall score goes to the Coway Airmega ProX, with a smoke CADR of 577 cfm.

The ranking at a glance

#	Product	Score	Smoke CADR	Smoke CADR per watt	Rated room size
1	Coway Airmega ProX	99.9	577 cfm	10.3 cfm/W	894 sq ft
2	CUCKOO CAC-F3010FW	91.1	552 cfm	8.01 cfm/W	856 sq ft
3	Soleusair GA1-W	84	523 cfm	6.6 cfm/W	811 sq ft
4	Fellowes Aeramax SV	82.3	518 cfm	6.19 cfm/W	803 sq ft
5	Coway AP-3018B	78.7	413 cfm	10.33 cfm/W	640 sq ft
6	CUCKOO CAC-AH2810FNW	75.9	455 cfm	6.91 cfm/W	705 sq ft
7	Coway Airmega 450	73.8	443 cfm	6.69 cfm/W	687 sq ft
8	Coway Airmega 450S	73.4	443 cfm	6.55 cfm/W	687 sq ft
9	HealthWay MAX500	67.4	413 cfm	5.65 cfm/W	640 sq ft
10	Intellipure MAX500	67.4	413 cfm	5.65 cfm/W	640 sq ft

The products

1. Coway Airmega ProX

Best for: wildfire smoke and heavy smoke in a large room · Score 99.9/100

Pros

Smoke CADR: 577 cfm (#1 of 10 here)
Smoke CADR per watt: 10.3 cfm/W (#2 of 10 here)
Rated room size: 894 sq ft (#1 of 10 here)

Cons

No weak spot among these 10 in the certified data; it does not cover noise or running costs beyond electricity

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4015877, retrieved 2026-11-01

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2. CUCKOO CAC-F3010FW

Best for: wildfire smoke and heavy smoke in a large room · Score 91.1/100

Pros

Smoke CADR: 552 cfm (#2 of 10 here)
Smoke CADR per watt: 8.01 cfm/W (#3 of 10 here)
Rated room size: 856 sq ft (#2 of 10 here)

Cons

No weak spot among these 10 in the certified data; it does not cover noise or running costs beyond electricity

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4517930, retrieved 2026-11-01

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3. Soleusair GA1-W

Best for: wildfire smoke and heavy smoke in a large room · Score 84/100

Pros

Smoke CADR: 523 cfm (#3 of 10 here)
Rated room size: 811 sq ft (#3 of 10 here)

Cons

Smoke CADR per watt: 6.6 cfm/W (#6 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4046703, retrieved 2026-11-01

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4. Fellowes Aeramax SV

Best for: wildfire smoke and heavy smoke in a large room · Score 82.3/100

Pros

Rated room size: 803 sq ft (#4 of 10 here)

Cons

Smoke CADR per watt: 6.19 cfm/W (#8 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4587264, retrieved 2026-11-01

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5. Coway AP-3018B

Best for: wildfire smoke and heavy smoke in a large room · Score 78.7/100

Pros

Smoke CADR per watt: 10.33 cfm/W (#1 of 10 here)

Cons

Smoke CADR: 413 cfm (#7 of 10 here)
Rated room size: 640 sq ft (#7 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4481456, retrieved 2026-11-01

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6. CUCKOO CAC-AH2810FNW

Best for: wildfire smoke and heavy smoke in a large room · Score 75.9/100

Pros

Rated room size: 705 sq ft (#5 of 10 here)

Cons

Smoke CADR: 455 cfm (#5 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4528788, retrieved 2026-11-01

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7. Coway Airmega 450

Best for: wildfire smoke and heavy smoke in a large room · Score 73.8/100

Pros

Rated room size: 687 sq ft (#6 of 10 here)

Cons

Smoke CADR: 443 cfm (#6 of 10 here)
Rated room size: 687 sq ft (#6 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4005917, retrieved 2026-11-01

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8. Coway Airmega 450S

Best for: wildfire smoke and heavy smoke in a large room · Score 73.4/100

Pros

Rated room size: 687 sq ft (#6 of 10 here)

Cons

Smoke CADR: 443 cfm (#6 of 10 here)
Rated room size: 687 sq ft (#6 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4005914, retrieved 2026-11-01

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9. HealthWay MAX500

Best for: wildfire smoke and heavy smoke in a large room · Score 67.4/100

Pros

Rated room size: 640 sq ft (#7 of 10 here)

Cons

Smoke CADR: 413 cfm (#7 of 10 here)
Smoke CADR per watt: 5.65 cfm/W (#9 of 10 here)
Rated room size: 640 sq ft (#7 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4701214, retrieved 2026-11-01

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10. Intellipure MAX500

Best for: wildfire smoke and heavy smoke in a large room · Score 67.4/100

Pros

Rated room size: 640 sq ft (#7 of 10 here)

Cons

Smoke CADR: 413 cfm (#7 of 10 here)
Smoke CADR per watt: 5.65 cfm/W (#9 of 10 here)
Rated room size: 640 sq ft (#7 of 10 here)

Specs: ENERGY STAR certified Room Air Cleaners dataset (U.S. EPA, data.energystar.gov gaa3-swy6), record 4701234, retrieved 2026-11-01

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How this ranking is scored

We compared the 10 zero-ozone ENERGY STAR certified air purifiers with the highest certified smoke CADR. Smoke is the hardest of the three CADR tests (smoke, dust, pollen) because the particles are the smallest, so it gets the largest weight.

Smoke CADR (60%): how fast the unit removes smoke-sized particles, the hardest test (higher is better)
Smoke CADR per watt (25%): clean air per watt; matters when it runs all day during smoke events (higher is better)
Rated room size (15%): the largest room it is certified to clean (higher is better)

Each number is scored against the best on this page (best = 100%; e.g. 90% of the best capacity = 0.9) and multiplied by its weight; the total is out of 100. Full method.

FAQ

What smoke CADR do I need?

A common rule of thumb (AHAM) is a smoke CADR of at least two thirds of the room's floor area: about 200 cfm for a 300 sq ft room. The models here range from 413 to 577 cfm.

Why only zero-ozone models?

Ozone is a lung irritant. Every model on this page has 0.00 ppb certified ozone emissions in the ENERGY STAR data.

Where do these numbers come from?

From the U.S. EPA ENERGY STAR certified product dataset, which lists the CADR and energy results each model was certified with. We did not test the units ourselves; we rank the certified results.

Does a higher CADR mean more noise?

Usually, at the top fan speed. The certification data does not include noise, so check the maker's decibel rating if the unit will run in a bedroom.

Sources

https://data.energystar.gov/Active-Specifications/ENERGY-STAR-Certified-Room-Air-Cleaners-V3-0/gaa3-swy6