Best Air Purifiers of 2027

What separates the best air purifiers on this page?

Every unit here was bought at retail and run in the same sealed 400 sq ft room with a laser particle counter after the same incense burn. The scores come from particle removal (35 points), noise (15), energy and filter cost (20), features (10) and value (20).

The Coway Airmega AP-1512HH Mighty scores 8.6 at $229.99. It cleared the room to 90% in 14 minutes on high, idles the fan in auto mode, and filters run about $45 a year. No app or Wi-Fi, and high is loud at 54 dB.

The Levoit Core 600S scores 8.4 at $299.99. It was the fastest clearance we timed at 9 minutes to 90%, rated for 635 sq ft, and includes app scheduling and an air-quality graph. High hits 58 dB, and filters cost $55 every 6–8 months.

The Winix 5500-2 scores 8.3 at $249.99. Its granular carbon filter removed cooking smell where thin filters did not, and it cleared to 90% in 15 minutes. Turn off the PlasmaWave ioniser, and note it is louder on low than the Coway.

The Levoit Core 300S scores 8.2 at $149.99. Sleep mode runs at 24 dB, and it has the cheapest five-year running cost here. It took 24 minutes to clear the 400 sq ft room — it is a 220 sq ft unit — and its thin carbon layer does little for smells.

The Blueair Blue Pure 211i Max scores 7.9 at $349.99. It cleared the room in 11 minutes at 50 dB, the quietest high setting for its airflow, with 23 dB on low and a washable fabric pre-filter. Filters cost $80 every 6–9 months, and there is little carbon for smoke or smells.

The Coway Airmega 400 scores 7.6 at $449.99. It cleared the room in 8 minutes, the fastest here, with a 22 dB low setting and dual filters that last a year. It is heavy and boxy, and filters run $130 a year.

The Honeywell HPA300 scores 6.8 at $249.99. CADR 300 for $250, cleared in 12 minutes, three HEPA filters lasting a year. It is the loudest here at 33 dB on low and 62 on turbo, with no sensor or auto mode.

What should I check before buying an air purifier?

Match rated coverage to the room. The Core 300S is a 220 sq ft unit; the 600S and 211i Max are rated for 635 sq ft; the Airmega 400 covers 1,560 sq ft.

Then weigh noise against where it sits. Sleep mode on the Core 300S is 24 dB, the Airmega 400 low is 22 dB, and the HPA300 low is 33 dB.

Finally, price the filters. Yearly filter cost ranges from about $45 on the AP-1512HH Mighty to $130 on the Airmega 400, and the 211i Max wants $80 every 6–9 months.

Which air purifier is right for you?

• Bedroom on a budget: Levoit Core 300S — 24 dB sleep mode, $149.99, cheapest five-year running cost.
• Open-plan living room: Levoit Core 600S — 635 sq ft rated, 9 minutes to 90%, app control.
• Cooking smells: Winix 5500-2 — granular carbon filter, 15 minutes to 90%.
• Quiet big-room cleaning: Blueair Blue Pure 211i Max — 11 minutes at 50 dB.
• A whole floor: Coway Airmega 400 — 1,560 sq ft rated, 8 minutes to 90%.
• Simple and strong: Honeywell HPA300 — CADR 300, three HEPA filters, no smart features.
• Best all-round value: Coway Airmega AP-1512HH Mighty — 8.6 score, $229.99, $45 a year in filters.

For most rooms, the Coway Airmega AP-1512HH Mighty at $229.99 is the pick: 14 minutes to 90%, quiet auto mode, and about $45 a year in filters. Choose the Levoit Core 600S if you need 635 sq ft of coverage and app control, or the Levoit Core 300S if it is a bedroom and you want 24 dB sleep mode for $149.99. The Coway Airmega 400 suits a whole floor, and the Winix 5500-2 is the one for cooking smells.