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Air purifiers for a 322 sq ft roomAir purifiers for a 30 m² room

Needs 360 m³/h (212 CFM) of smoke CADR. Why? 30 m²322 sq ft · An average living room

Picked by the BuyBySpecs Team

BuyBySpecs on YouTube · sources checked 1 Nov 2026

3 picks for 322 sq ft3 picks for 30 m²

Our pickAHAM verified

Winix T810

Winix · T810

Really cleans
411 sq ft38 m² 38 m²411 sq ft
New filter
every 12 months
See it on Amazon: Winix T810

Covers 411 sq ft38 m² (38 m²411 sq ft) · 26% spare

Why it's here: The smallest verified model with 25% more air than this room needs, so it needn't run flat out.

Specs, sources and trade-offs

Also big enough for 322 sq ft30 m²

Levoit Vital 200S-P

Levoit

AHAM verified

Really cleans
381 sq ft35 m² 35 m²381 sq ft
Box says
1,862 sq ft173 m² 4.9× overstated
New filter
6–12 months

Winix 5510

Winix

AHAM verified

Really cleans
385 sq ft35 m² 35 m²385 sq ft
Box says
392 sq ft36 m² about right
New filter
12 months

Blueair Blue Pure 311i Max

Blueair

AHAM verified

Really cleans
431 sq ft40 m² 40 m²431 sq ft
Box says
2,207 sq ft205 m² 5.1× overstated
New filter
9 months

Honeywell HPA300

Honeywell

AHAM verified

Really cleans
457 sq ft42 m² 42 m²457 sq ft
Box says
465 sq ft43 m² about right
New filter
3–12 months

Winix 9800

Winix

AHAM verified

Really cleans
513 sq ft47 m² 47 m²513 sq ft
Box says
2,506 sq ft233 m² 4.9× overstated
New filter
3–12 months

Levoit EverestAir-P

Levoit

AHAM verified

Really cleans
539 sq ft50 m² 50 m²539 sq ft
Box says
2,635 sq ft245 m² 4.9× overstated
New filter
12–15 months

2 bigger verified models cover it too, but each is more than twice the size this room needs, so we leave them out here. See every purifier.

Big enough on paper, but not verified

The CADR for these comes from the maker only, so we never make them a pick. We show the maths so you can compare.

Coway Airmega AP-1512HH Mighty

Coway

Not verified

Really cleans
355 sq ft32 m² 32 m²355 sq ft
Box says
1,748 sq ft162 m² 4.9× overstated
New filter
6–12 months

Coway Airmega Mighty2

Coway

Not verified

Really cleans
365 sq ft33 m² 33 m²365 sq ft
Box says
1,800 sq ft167 m² 4.9× overstated
New filter
12 months

Coway Airmega 200M

Coway

Not verified

Really cleans
374 sq ft34 m² 34 m²374 sq ft
Box says
1,748 sq ft162 m² 4.7× overstated
New filter
6–12 months

Rabbit Air A3

Rabbit Air

Not verified

Really cleans
391 sq ft36 m² 36 m²391 sq ft
Box says
1,070 sq ft99 m² 2.7× overstated
New filter
12–24 months

Coway Airmega 400S

Coway

Not verified

Really cleans
499 sq ft46 m² 46 m²499 sq ft
Box says
3,120 sq ft290 m² 6.2× overstated
New filter
6–12 months

Coway Airmega 350

Coway

Not verified

Really cleans
536 sq ft49 m² 49 m²536 sq ft
Box says
2,640 sq ft245 m² 4.9× overstated
New filter
12 months

The box says yes. The maths says no.

These are sold as big enough for 322 sq ft30 m², but at 4.8 air changes an hour they aren't.

  • GermGuardian AC4825E Cleans a 153 sq. ft. room in just 12.5 minutes or up to 743 sq. ft. every hourCleans a 153 sq. ft. room in just 12.5 minutes or up to 743 sq. ft. every hour (69 m²) really 150 sq ft14 m²
  • Coway Airmega 100 Purifies 810 ft² in 60 minsPurifies 810 ft² in 60 mins (75 m²) really 164 sq ft15 m²
  • Levoit Core 200S-P Changes the air in a 672 ft2 room once per hourChanges the air in a 672 ft2 room once per hour (62 m²) really 137 sq ft12 m²
  • Levoit Core 300 Changes the air in a 1066 ft2 room once per hourChanges the air in a 1066 ft2 room once per hour (99 m²) really 217 sq ft20 m²
  • Levoit Vital 100S-P Ideal Room Size: 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH)Ideal Room Size: 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH) (99 m²) really 217 sq ft20 m²
  • Blueair Blue Pure 511i Max Quickly cleans 237 ft² every 12.5 minutes & 1,138 ft² in 1 hourQuickly cleans 237 ft² every 12.5 minutes & 1,138 ft² in 1 hour (106 m²) really 233 sq ft21 m²
  • Coway Airmega 150 Purifies 1,035 ft² in 60 minsPurifies 1,035 ft² in 60 mins (96 m²) really 233 sq ft21 m²
  • Xiaomi Smart Air Purifier 4 Compact It can purify a 48 m² room 2 times per hour (517 sq ft)It can purify a 48 m² room 2 times per hour really 206 sq ft19 m²

Before you buy for 322 sq ft30 m²

What 322 sq ft30 m² looks like

An average living room: about 16 × 20 ft (5 × 6 m)about 5 × 6 m (16 × 20 ft). With a 2.5 m ceiling that's 75 m³ of air to pass through a filter 4.8 times an hour.

How the picks differ

Spare air: 26% for the Winix T810, 10% for the Levoit Core 400S-P and 83% for the Levoit Core 600S-P. The more air to spare, the slower and quieter it can run here to keep up (more on noise).

All of them have a PM2.5 sensor with auto mode. The Winix T810 has an ionizer you can switch off; the others have none.

New filters: every 12 months for the Winix T810, every 6–12 months for the Levoit Core 400S-P and every 6–12 months for the Levoit Core 600S-P (filters). The Winix T810 is the most compact at 51.8 cm tall and 4.6 kg; the Levoit Core 600S-P stands 60 cm and weighs 6.2 kg.

High ceilings

With a 2.7 m ceiling this room needs 389 m³/h of smoke CADR, with 3 m 432 m³/h. At 3 m only the Winix T810 and Levoit Core 600S-P still cover it. For a high ceiling, look at the 376 sq ft35 m² picks. (Why ceilings matter)

Open-plan

If this room opens onto a kitchen or hall with no door between, count it too. Add 54 sq ft and you're at If this room opens onto a kitchen or hall with no door between, count it too. Add 5 m² and you're at 376 sq ft35 m²: of the picks here, only the Winix T810 and Levoit Core 600S-P still cover it. (Open-plan spaces)

One purifier or two?

In a long or L-shaped room, two smaller units at opposite ends clean more evenly than one. Two Levoit Core 300s, each covering 217 sq ft (20 m²), do the job here (In a long or L-shaped room, two smaller units at opposite ends clean more evenly than one. Two Levoit Core 300s, each covering 20 m² (217 sq ft), do the job here (why two can beat one).

Where to put it

In a living room, put it near the sofa rather than in a corner, with the inlet clear of curtains and furniture. (Where to put it)

How these were chosen

  1. Only models whose verified smoke CADR gives 4.8 air changes an hour in 322 sq ft30 m² with a 2.5 m ceiling: at least 360 m³/h.
  2. Our pick is the smallest model with 25% more air than the room needs, so it needn't run flat out. Each card says why it's there.
  3. We don't test purifiers ourselves. The CADR behind every pick is certified by AHAM; the filter and feature facts are the makers' own, and each model's page links to them.
  4. No prices, and brands can't pay to be included. The full method

Other room sizes

Smaller: 269 sq ft25 m²Bigger: 376 sq ft35 m²

Not exactly 322 sq ft30 m²?

Enter your room and ceiling height. Room pages round up to the next size.